Thermal Bypass Valve Kit For Ford 6R80 6R90 4R70 4R75E 4R75W 6F35 Transmissions And GM 1500 Duramax 10L80 2020 And Up Built To Improve Temp Control, Cut Wear, And Deliver Smoother, Reliable Shifts
✔️ Single kit improves temp control, reduces wear; STL020
Engineered for use with modern Ford 6R80/6R90, 4R70/4R75, and 6F35 automatic transmissions and GM's 10L80-powered Duramax trucks. This thermal bypass valve kit helps maintain stable transmission temperatures, reduces wear on internal components, and promotes smoother, more reliable shifts. The universal fit design accommodates many external cooler block configurations, simplifying installation across different builds.
✅ Compatible with 2016-Up Ford transmissions with 6R80, 6R90, 4R70, 4R75, 6F35 and 2020-Up GM 1500 Duramax 10L80
✅ STL020 is the current universal fit valve, replacing STL017
✅ Universal fit covers most 2-line in/out cooler blocks with cutaway views
✅ Replaces STL017; works with inline and offset blocks
💡 What is a thermal bypass valve kit and how does it improve automatic transmission performance? This handy kit helps manage temps and wear in common automatics.
- Helps maintain cooler operating temperatures by bypassing hot fluid - Reduces wear on clutch packs and seals for longer life - Designed for handy compatibility with multiple Ford and GM transmission blocks✝️