{"title":"Coolant Bypass Kits","description":"","products":[{"product_id":"i-31853-fleece-performance-vp-coolant-bypass-kit-1998-5-2002-fpe-clntbyps-cummins-vp","title":"Fleece Performance VP Coolant Bypass Kit 1998.5-2002 - FPE-CLNTBYPS-CUMMINS-VP","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\n\u003cp\u003eThe 03-07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\n\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270168436907,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-VP","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686511_6243281c-589d-4807-aa48-43053c123c8e.jpg?v=1752599115"},{"product_id":"i-31882-fleece-performance-cummins-coolant-bypass-kit-2006-2007-auto-trans-fpe-clntbyps-cummins-0607","title":"Fleece Performance Cummins Coolant Bypass Kit 2006-2007 Auto Trans - FPE-CLNTBYPS-CUMMINS-0607","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003+ include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger.\u003c\/p\u003e\n\u003cp\u003eThe heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/p\u003e\n\u003cp\u003eAll ���������07-���������13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270171549867,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0607","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686573_21455e4c-200a-48d7-a5b1-88b362667660.jpg?v=1752599103"},{"product_id":"i-31884-fleece-performance-cummins-coolant-bypass-kit-2003-2005-auto-trans-fpe-clntbyps-cummins-0305","title":"Fleece Performance Cummins Coolant Bypass Kit 2003-2005 Auto Trans - FPE-CLNTBYPS-CUMMINS-0305","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003+ include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhy do I need a Fleece Coolant Bypass? One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger.\u003c\/p\u003e\n\u003cp\u003eThe heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All ���������07-���������13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270171582635,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0305","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686578_599ebe26-e9b5-4304-a9f1-a028c5145df7.jpg?v=1752599101"},{"product_id":"i-31947-fleece-performance-2003-2007-cummins-coolant-bypass-brackets-fpe-clnt-hs-brkt","title":"Fleece Performance 2003-2007 Cummins Coolant Bypass Brackets - FPE-CLNT-HS-BRKT","description":"\u003cp\u003e2003-2007 Cummins Coolant Bypass Brackets (Set of two)\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270174204075,"sku":"FQWW-FPE-CLNT-HS-BRKT","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686725_29f98c0c-9cb4-4d92-a095-cd90ce1f360d.jpg?v=1752599077"},{"product_id":"i-31967-fleece-performance-12v-coolant-bypass-kit-1994-1998-fpe-clntbyps-cummins-12v","title":"Fleece Performance 12V Coolant Bypass Kit 1994-1998 - FPE-CLNTBYPS-CUMMINS-12V","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKits for MY 2003+ include billet hose brackets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e One of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform. The '03-'07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger.\u003c\/p\u003e\n\u003cp\u003eThe heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/p\u003e\n\u003cp\u003eAll ���������07-���������13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270175744171,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-12V","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686770_d4ab9cbc-ee90-4036-bc26-03f4867be746.jpg?v=1752599067"},{"product_id":"i-31978-fleece-performance-39-50-inch-12-valve-cummins-coolant-bypass-hose-stainless-steel-braided-fpe-clntbyps-hs-12v-ss","title":"Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-12V-SS","description":"\u003cp\u003e39.50 inch 12 Valve Cummins Coolant Bypass Hose - Stainless Steel Braided\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270176628907,"sku":"FQWW-FPE-CLNTBYPS-HS-12V-SS","price":84.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686790_46fd5b8d-5033-4801-8613-361e1563094f.jpg?v=1752599058"},{"product_id":"i-31979-fleece-performance-39-50-inch-12-valve-cummins-coolant-bypass-hose-black-nylon-braided-fpe-clntbyps-hs-12v-blk","title":"Fleece Performance 39.50 Inch 12 Valve Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-12V-BLK","description":"\u003cp\u003e39.50 inch 12 Valve Cummins Coolant Bypass Hose (Black Nylon Braided)\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270176661675,"sku":"FQWW-FPE-CLNTBYPS-HS-12V-BLK","price":84.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686791_b1eac68b-c427-47a5-94fa-44c1863763a5.jpg?v=1752599057"},{"product_id":"i-31980-fleece-performance-34-5-inch-common-rail-vp44-cummins-coolant-bypass-hose-stainless-steel-braided-fpe-clntbyps-hs-crvp-ss","title":"Fleece Performance 34.5 Inch Common Rail\/VP44 Cummins Coolant Bypass Hose Stainless Steel Braided - FPE-CLNTBYPS-HS-CRVP-SS","description":"\u003cp\u003eReplacement coolant bypass house with stainless steel braiding for our Common Rail\/VP44 Cummins Coolant Bypass Kits.������\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e34.5 inch Common Rail\/VP44 Cummins Coolant Bypass Hose - Stainless Steel Braided\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFor use with the following kits:������\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFPE-CLNTBYPS-CUMMINS-VP-SS\u003c\/li\u003e\n\u003cli\u003eFPE-CLNTBYPS-CUMMINS-0607-SS\u003c\/li\u003e\n\u003cli\u003eFPE-CLNTBYPS-CUMMINS-0305-SS\u003c\/li\u003e\n\u003cli\u003eFPE-CLNTBYPS-CUMMINS-6.7-SS\u003c\/li\u003e\n\u003cli\u003eFPE-CLNTBYPS-CUMMINS-MAN-SS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270176694443,"sku":"FQWW-FPE-CLNTBYPS-HS-CRVP-SS","price":75.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686792_5869ec81-b86f-4ba8-a62b-3328ef031273.jpg?v=1752599055"},{"product_id":"i-31981-fleece-performance-34-5-inch-common-rail-vp44-cummins-coolant-bypass-hose-black-nylon-braided-fpe-clntbyps-hs-crvp-blk","title":"Fleece Performance 34.5 Inch Common Rail\/VP44 Cummins Coolant Bypass Hose Black Nylon Braided - FPE-CLNTBYPS-HS-CRVP-BLK","description":"\u003cp\u003e34.5 inch Common Rail\/VP44 Cummins Coolant Bypass Hose (Black Nylon Braided)\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270176727211,"sku":"FQWW-FPE-CLNTBYPS-HS-CRVP-BLK","price":75.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686793_89893cb5-b630-422c-a61d-aeb9edcce0c6.jpg?v=1752599054"},{"product_id":"i-32002-fleece-performance-cummins-coolant-bypass-kit-vp-98-5-02-with-stainless-steel-braided-line-fpe-clntbyps-cummins-vp-ss","title":"Fleece Performance Cummins Coolant Bypass Kit VP 98.5-02 with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-VP-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003+ include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/li\u003e\n\u003cli\u003eFor model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270177677483,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-VP-SS","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686823_f8ad7b3f-4c76-4190-b817-6b1c482d60a1.jpg?v=1752599042"},{"product_id":"i-32003-fleece-performance-cummins-coolant-bypass-kit-12v-94-98-with-stainless-steel-braided-line-fpe-clntbyps-cummins-12v-ss","title":"Fleece Performance Cummins Coolant Bypass Kit 12V 94-98 with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-12V-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/li\u003e\n\u003cli\u003eFor model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270177710251,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-12V-SS","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686824_60986bae-bd4e-43b2-968c-8991a9288f62.jpg?v=1752599041"},{"product_id":"i-32004-fleece-performance-cummins-coolant-bypass-kit-06-07-auto-trans-with-stainless-steel-braided-line-fpe-clntbyps-cummins-0607-ss","title":"Fleece Performance Cummins Coolant Bypass Kit 06-07 Auto Trans with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-0607-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/li\u003e\n\u003cli\u003eFor model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270177743019,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0607-SS","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686825_2af9ec43-a857-4521-9d61-aae45a84b97e.jpg?v=1752599040"},{"product_id":"i-32006-fleece-performance-cummins-coolant-bypass-kit-003-05-auto-trans-with-stainless-steel-braided-line-fpe-clntbyps-cummins-0305-ss","title":"Fleece Performance Cummins Coolant Bypass Kit 003-05 Auto Trans with Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-0305-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003cbr\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature\/over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/li\u003e\n\u003cli\u003eFor model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270177775787,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0305-SS","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686830_b73d29b1-1e92-4e0e-ad2c-a57dbf8bcfab.jpg?v=1752599040"},{"product_id":"i-32016-fleece-performance-94-18-dodge-2500-3500-cummins-coolant-bypass-service-kit-fpe-clntbyps-cummins-ser-kit","title":"Fleece Performance 94-18 Dodge 2500\/3500 Cummins Coolant Bypass Service Kit - FPE-CLNTBYPS-CUMMINS-SER-KIT","description":"\u003cp\u003eComplete kit to service your Fleece Performance Coolant Bypass - Includes all O-rings, fasteners, and a new thermostat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo thermostats included to service all production years, you will only use one (1) of the included thermostats when replacing your bypass thermostat.\u003c\/li\u003e\n\u003cli\u003eThis kit does not include the Cummins thermostat.\u003c\/li\u003e\n\u003cli\u003eThe kit includes 3 new square cut O-rings and 1 new standard O-ring as well as 2 new O-rings for each of AN fittings.\u003c\/li\u003e\n\u003cli\u003eWhen used with MY94 - MY2002 kits, not all O-rings will be utilized.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45270178169003,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-SER-KIT","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686847_85910626-0c2f-4d65-bc15-1a3fc7186d3c.jpg?v=1752599031"},{"product_id":"i-31883-fleece-performance-cummins-coolant-bypass-kit-2003-2007-manual-transmission-fpe-clntbyps-cummins-man","title":"Fleece Performance Cummins Coolant Bypass Kit 2003-2007 Manual Transmission - FPE-CLNTBYPS-CUMMINS-MAN","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures, The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003cbr\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\n\u003cp\u003eThe 03-07 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is not a fluid cooler; it was designed for use in cold climates to warm the transmission fluid with the engine coolant.\u003c\/p\u003e\n\u003cp\u003eIt is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed. All 07-13 6.7 trucks, both automatic and manual equipped transmissions, do not have a transmission fluid heat exchanger.\u003c\/p\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281047937195,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-MAN","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686574.jpg?v=1752527143"},{"product_id":"i-32005-fleece-performance-cummins-coolant-bypass-kit-03-07-manual-transmission-w-stainless-steel-braided-line-fpe-clntbyps-cummins-man-ss","title":"Fleece Performance Cummins Coolant Bypass Kit 03-07 Manual Transmission w\/ Stainless Steel Braided Line - FPE-CLNTBYPS-CUMMINS-MAN-SS","description":"\u003cp\u003eIncreased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9\/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003cbr\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003cli\u003eKits for MY 2003 and up include billet hose brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 5.9\/6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe 2003 - 2007 5.9L automatic transmission version will eliminate the factory transmission fluid heat exchanger. The heat exchanger is designed for use in cold climates to warm the transmission fluid with the engine coolant. It is not necessary for use in warm climates or high horsepower applications, nor does it detrimentally affect the trucks performance when removed.\u003c\/li\u003e\n\u003cli\u003eFor model years 2007 - 2018 6.7L trucks, including both automatic and manual equipped transmissions, factory installed transmission fluid heat exchangers are uncommon. For customers with a 6.7L that has a heat exchanger, a heater tube can be purchased at your local Chrysler Dealership [PN:68048997AA] to complete the installation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281073692843,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-MAN-SS","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686826.jpg?v=1752527091"},{"product_id":"i-32053-fleece-performance-replacement-o-ring-kit-for-cummins-coolant-bypass-kits-fpe-clntbyps-cr-oring-kit","title":"Fleece Performance Replacement O-ring Kit for Cummins Coolant Bypass Kits - FPE-CLNTBYPS-CR-ORING-KIT","description":"\u003cp\u003eReplacement O-ring Kit for all Fleece Cummins Coolant Bypass.������When used with MY94 - MY2002 kits, not all O-rings will be utilized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKits includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3 new square cut O-rings\u003c\/li\u003e\n\u003cli\u003e1 new standard O-ring\u003c\/li\u003e\n\u003cli\u003e2 new AN fitting O-rings\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281082179755,"sku":"FQWW-FPE-CLNTBYPS-CR-ORING-KIT","price":9.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198686921.jpg?v=1752527070"},{"product_id":"i-32171-fleece-performance-coolant-bypass-kit-for-2019-present-ram-with-6-7l-cummins-fpe-clntbyps-cummins-19","title":"Fleece Performance Coolant Bypass Kit for 2019-Present Ram with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-19","description":"\u003cp\u003eJust in time for Summer! Our all-new Fleece Performance coolant bypass for the 2019-Present RAM with 6.7L Cummins! Our patent pending design seamlessly integrates with your truck for an OE fit-and-finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncreased Coolant Flow, Decreased Coolant Temperatures\u003c\/li\u003e\n\u003cli\u003eThe rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/li\u003e\n\u003cli\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/li\u003e\n\u003cli\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature \/ over-pressure condition. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRear coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eFront coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eNew EGR cross-over tube gaskets\u003c\/li\u003e\n\u003cli\u003eBlack braided nylon coolant bypass hose with AN fittings\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 Year Limited Parts Warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281123434667,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-19","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198687287.jpg?v=1752526989"},{"product_id":"i-32187-fleece-performance-coolant-bypass-kit-for-2007-5-2012-ram-with-6-7l-cummins-fpe-clntbyps-cummins-0712","title":"Fleece Performance Coolant Bypass Kit for 2007.5-2012 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-0712","description":"\u003cp\u003eThe Fleece Performance coolant bypass for the 2007.5-2012 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish.\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncreased Coolant Flow, Decreased Coolant Temperatures\u003c\/strong\u003e\u003cbr\u003eThe rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature\/over-pressure condition.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRear coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eFront coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eNew EGR cross-over tube gaskets\u003c\/li\u003e\n\u003cli\u003eBlack braided nylon coolant bypass hose with protective high temperature sleeve and AN fittings\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281128579243,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-0712","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198687337.png?v=1752526979"},{"product_id":"i-32188-fleece-performance-coolant-bypass-kit-for-2013-2018-ram-with-6-7l-cummins-fpe-clntbyps-cummins-1318","title":"Fleece Performance Coolant Bypass Kit for 2013-2018 RAM with 6.7L Cummins - FPE-CLNTBYPS-CUMMINS-1318","description":"\u003cp\u003eThe Fleece Performance coolant bypass for the 2013-2018 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish.\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncreased Coolant Flow, Decreased Coolant Temperatures\u003c\/strong\u003e\u003cbr\u003eThe rear cylinders on the 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.\u003c\/p\u003e\n\u003cp\u003eThis can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.\u003c\/p\u003e\n\u003cp\u003eOur coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLowers coolant temperature at the rear cylinders\u003c\/li\u003e\n\u003cli\u003eEnsures consistent temperatures across all cylinders\u003c\/li\u003e\n\u003cli\u003ePrevents damaging coolant pressure build up\u003c\/li\u003e\n\u003cli\u003eComplete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy do I need a Fleece Coolant Bypass?\u003c\/strong\u003e\u003cbr\u003eOne of the biggest issues on the 6.7L Cummins is the coolant flow problem to the rear cylinders. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature\/over-pressure condition.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.\u003cbr\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRear coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eFront coolant bypass thermostat housing\u003c\/li\u003e\n\u003cli\u003eNew EGR cross-over tube gaskets\u003c\/li\u003e\n\u003cli\u003eBlack braided nylon coolant bypass hose with protective high temperature sleeve and AN fittings\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":45281128841387,"sku":"FQWW-FPE-CLNTBYPS-CUMMINS-1318","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/0104\/1323\/files\/F198687342.png?v=1752526979"}],"url":"https:\/\/plowboydiesel.com\/collections\/coolant-bypass-kits.oembed","provider":"PlowboyDiesel","version":"1.0","type":"link"}