{"product_id":"pacific-performance-engineering-transmission-thermal-bypass-valve-for-6l80-2014-2018-black-direct-fit-oem-replacement","title":"Pacific Performance Engineering Transmission Thermal Bypass Valve for 6L80 (2014–2018) — Black Direct-Fit OEM Replacement","description":"\u003cp\u003e\u003cstrong\u003ePPE Automatic Transmission Fluid Thermal Bypass Valve for 6L80-equipped GM trucks redirects ATF flow to protect the transmission by controlling fluid routing when temperatures are low or exceed design thresholds.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis dedicated replacement thermal bypass valve from Pacific Performance Engineering (PPE) is engineered for GM vehicles using the 6L80 automatic transmission from model years 2014–2018. It’s a direct-fit, black-finished component (PPE part 125068000) designed to integrate with Tahoe, Silverado, Sierra 1500, Escalade, Yukon and other compatible chassis fitted with 4.3L, 5.3L, 6.2L and similar engine variants. The valve helps manage how transmission fluid is routed depending on operating temperatures, providing controlled flow behavior without requiring major modifications.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the thermal bypass valve interface with my 6L80 transmission?\u003c\/h3\u003e\n\u003cp\u003eThe valve mounts in the factory routing for the 6L80 transmission fluid circuit and works by opening or closing internal passages based on fluid temperature. It redirects fluid either through the cooler or back through the transmission when appropriate, maintaining designed flow paths for the OE cooling system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacement for 6L80 transmission fluid routing.\u003c\/li\u003e\n  \u003cli\u003ePacked and finished in black to match OEM under-vehicle components.\u003c\/li\u003e\n  \u003cli\u003eIncludes PPE part number 125068000 for correct identification.\u003c\/li\u003e\n  \u003cli\u003eSimple installation using factory connections—no custom plumbing required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and engines is this PPE bypass valve compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis valve is specified for GM 6L80 transmissions installed in a range of 2014–2018 models, including full-size trucks and SUVs. Confirm compatibility by checking the transmission type and part number against your vehicle’s service documentation before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models: Chevrolet Tahoe, Silverado, Sierra 1500; GMC Sierra 1500; Cadillac Escalade; Chevrolet\/GMC Yukon (2014–2018).\u003c\/li\u003e\n  \u003cli\u003eCommon engine pairings include 4.3L, 5.3L and 6.2L V8 engines used with the 6L80.\u003c\/li\u003e\n  \u003cli\u003eWorks where the OEM routing uses a thermal bypass design for ATF flow.\u003c\/li\u003e\n  \u003cli\u003eUse vehicle VIN or OEM parts lookup to verify fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical and material details of this PPE replacement part?\u003c\/h3\u003e\n\u003cp\u003eThe PPE Thermal Bypass Valve (125068000) is built as a replacement transmission component using materials selected for durability and resistance to ATF exposure. The black finish offers corrosion resistance and visual consistency with under-hood and underbody components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFinished in black for wear and corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003eManufactured to match OEM mounting points and hose connections.\u003c\/li\u003e\n  \u003cli\u003eDesigned to withstand long-term exposure to automatic transmission fluid (ATF) temperatures.\u003c\/li\u003e\n  \u003cli\u003eSold as a single replacement valve—installation hardware may reuse original fasteners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and verify the valve after replacement?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows factory procedures for removing the original thermal bypass valve and connecting the replacement in the same routing. After installation, check for secure hose connections, no leaks, and correct fluid circulation during a cold start and warm-up cycle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstall using factory hose clamps and mounting points; torque to OEM specs.\u003c\/li\u003e\n  \u003cli\u003eInspect all seals and hoses for wear; replace if necessary.\u003c\/li\u003e\n  \u003cli\u003eStart engine and monitor for leaks and proper ATF flow during warm-up.\u003c\/li\u003e\n  \u003cli\u003eConfirm shift quality and fluid temperature behavior under light driving.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: technicians, DIY mechanics and fleet managers who own or maintain GM vehicles equipped with the 6L80 transmission and need a reliable, direct-fit thermal bypass valve replacement. If you require a part that matches OEM routing, bears the PPE part number 125068000, and is compatible with 2014–2018 Tahoe, Silverado, Sierra 1500, Escalade and Yukon models, this valve is intended for your application. Always verify vehicle transmission type and consult service manuals for installation specifics.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this PPE bypass valve fit my 2016 Chevrolet Silverado with a 6L80?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it is specified for 6L80 transmissions in 2014–2018 Silverado models; verify your transmission code or VIN to confirm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this part include installation hardware?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The valve is sold as the replacement unit; factory clamps and fasteners are typically reused unless stated otherwise.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":55172541514071,"sku":"B0D8BSNN8N","price":92.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ppe-bypass-valve-front-view.jpg?v=1790451730","url":"https:\/\/britishgarage.co.uk\/products\/pacific-performance-engineering-transmission-thermal-bypass-valve-for-6l80-2014-2018-black-direct-fit-oem-replacement","provider":"British Garage","version":"1.0","type":"link"}