{"product_id":"fleece-coolant-bypass-kit-fpe-clntbyps-cummins-19-2019-2024-6-7l-cummins","title":"FLEECE COOLANT BYPASS KIT FPE-CLNTBYPS-CUMMINS-19 | 2019-2024 6.7L CUMMINS","description":"\u003cp\u003eImprove coolant circulation through the rear cylinders of your Dodge\/Ram 6.7L Cummins with the Fleece Performance FPE-CLNTBYPS-19 Coolant Bypass Kit. Designed to address reduced coolant flow at the rear of the engine, this system helps lower rear-cylinder coolant temperatures and reduce excessive cooling-system pressure.\u003c\/p\u003e\n\u003cp\u003eThe rear cylinders of the 6.7L Cummins can experience higher operating temperatures due to reduced coolant flow. This temperature increase can contribute to excessive pressure at the rear of the engine, increasing the risk of freeze plug or under-valve-cover plug failure.\u003c\/p\u003e\n\u003cp\u003eThe Fleece Coolant Bypass Kit incorporates a \u003cstrong\u003esecondary thermostat\u003c\/strong\u003e that regulates additional coolant flow based on temperature rather than waiting for excessive pressure to develop. This helps maintain more consistent coolant temperatures across all six cylinders and reduces pressure buildup at the rear of the engine.\u003c\/p\u003e\n\u003cp\u003eDesigned for a clean, factory-style fit and finish, the complete kit includes front and rear coolant bypass thermostat housings, black braided nylon coolant hose, -AN O-ring fittings, new EGR cross-over tube gaskets, and the necessary mounting hardware.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved rear-cylinder coolant flow\u003c\/strong\u003e – Helps lower coolant temperatures at the rear of the engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature-activated secondary thermostat\u003c\/strong\u003e – Regulates additional coolant flow based on temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore consistent cylinder temperatures\u003c\/strong\u003e – Helps equalize coolant temperatures across all six cylinders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces pressure buildup\u003c\/strong\u003e – Helps prevent excessive cooling-system pressure at the rear of the engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory-style integration\u003c\/strong\u003e – Designed to integrate cleanly with the existing cooling system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack braided nylon hose\u003c\/strong\u003e – Provides a durable and clean coolant bypass connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-AN O-ring fittings\u003c\/strong\u003e – Provides secure, leak-resistant coolant connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\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\u003eBlack Braided Nylon Coolant Bypass Hose\u003c\/li\u003e\n\u003cli\u003e-AN O-Ring Fittings\u003c\/li\u003e\n\u003cli\u003eNew EGR Cross-Over Tube Gaskets\u003c\/li\u003e\n\u003cli\u003eMounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to improve coolant circulation through the rear cylinders of the 6.7L Cummins.\u003c\/li\u003e\n\u003cli\u003eVerify all fittings, hoses, and sealing surfaces during installation to ensure proper cooling-system operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Dodge\/Ram 6.7L Cummins\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eFPE-CLNTBYPS-CUMMINS-19\u003c\/p\u003e","brand":"Fleece Performance Engineering","offers":[{"title":"Default Title","offer_id":54105286181147,"sku":"FPE-CLNTBYPS-CUMMINS-19","price":379.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-10-05at11.28.51AM.png?v=1791221359","url":"https:\/\/wwmperformance.com\/products\/fleece-coolant-bypass-kit-fpe-clntbyps-cummins-19-2019-2024-6-7l-cummins","provider":"WWM Performance","version":"1.0","type":"link"}