{"product_id":"mishimoto-gmc-chevy-6-6l-duramax-l5p-full-flow-thermal-bypass-valve-kit","title":"Mishimoto GMC\/Chevy 6.6L Duramax L5P Full-Flow Thermal Bypass Valve Kit","description":"\u003cp\u003eThe Mishimoto full-flow thermal bypass valve kit replaces the failure-prone factory bypass valve on the Chevrolet\/GMC 6.6L Duramax L5P with the Allison 1000 transmission. The stock valve withholds transmission fluid from the cooler until operating temperature, and its thermostat can fail closed — starving the cooler and overheating the transmission. This CNC-machined billet aluminum full-flow valve eliminates the thermostat entirely, pumping fluid through the cooler the moment the truck starts for constant cooling — ideal for hot climates, heavy towing, or extreme driving. Black anodized, backed by the Mishimoto Lifetime Warranty.\u003c\/p\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;\" border=\"1\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eMishimoto\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eFull-flow transmission thermal bypass valve kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eAllison 1000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eCNC-machined billet aluminum, black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eFull-flow (no thermostat); constant cooler flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;\"\u003eMishimoto Lifetime Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003eThis part fits:\u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 2500 HD \/ 3500 HD\u003c\/td\u003e\n\u003ctd\u003e6.6L Duramax L5P (all trims)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSierra 2500 HD \/ 3500 HD\u003c\/td\u003e\n\u003ctd\u003e6.6L Duramax L5P (all trims)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":44292475945132,"sku":"MISMMTC-L5P-TBVFF","price":99.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0480\/2160\/2467\/files\/de65fc7686315c51685b44800c74473e.jpg?v=1744755429","url":"https:\/\/onefastshop.com\/products\/mishimoto-gmc-chevy-6-6l-duramax-l5p-full-flow-thermal-bypass-valve-kit","provider":"OneFastShop","version":"1.0","type":"link"}