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Your cart is empty.Add another measure of protection and increase fluid flow to transmission cooler. Increase cooling capacity with this easy-to-install billet aluminum PPE Transmission Fluid Thermal Bypass Valve for the GM 6L80 6-Speed transmission. The stock part has restrictive internal passages. When the stock valve fails in the closed position, transmission fluid doesn’t reach your cooler. This can be caused by mechanical failure or debris. The result of stock valve failure can cause the transmission to dangerously overheat. Without properly cooled transmission fluid, the demands of towing and rigorous stop-and-go driving conditions shorten the life of transmission components. The PPE Bypass Valve eliminates the extremely restrictive mechanical factory valve, maximizing fluid flow to and from the transmission cooler. For further protection, a Neodymium magnet equipped service plug with O-ring seal has been added. The removable plug traps ferrous debris and can be accessed to remove particles from the system. The factory bypass valve does not have this feature.
Joe
2025-09-07 14:11:41
Valve bolted on with zero problems, and do this while the engine and transmission cold! I recommend parking your front wheels on ramps to keep minimum fluid loss during replacement. This valve by PPE only comes with valve, no gaskets, or O-rings so be mindful when removing OEM to keep these for aftermarket bypass valve. I have yet to see how this preforms, but most reviews and research shows this is a quality product.
CJ
2025-09-06 14:58:34
This is a solid unit, PPE is a great company as I’ve used their products on my 20 Ranger , so far so good quality looks great. 1 thing i would add is I had trial and error due to the instructions not stating take the o rings off the OEM so I had to learn the hard way. But it’s all good now. OEM was at 200 degrees and this PPE one I’m at 150 degrees a 50 degrees difference at idle and 70 degree difference at highway speeds. I out a 4 star because not stating to remove OEM I rings and place them on the PPE.
chris
2025-08-28 10:14:08
Quality built product but did not come with gasket and is only open port so transmission never gets to proper operating tempGood product but wrong for me
Ryan Fields
2025-06-20 20:12:00
Exact fit, eliminates the unnecessary factory thermostat. Transmission now runs nice and cool
Felipe
2025-06-14 18:43:36
Brought trans Temp down significantly, recommend!!!
Flsoftail
2025-06-06 10:41:33
Wasted $110.The superior $30 kit lowers the transmission temperature better than this item.
Brandon Staley
2025-02-20 12:34:09
Worked perfectly
Jacob holloway
2025-02-19 15:35:36
It’s great quality, straight bypass, my only complaint is there’s no gaskets.
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