Description
Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.
Cooler Flow Bypass Valve Upgrade Kit Replace Part Number: STL010
Bypass Gasket Replace Part Number: 66219, 15251488
Cooler Flow Bypass Valve Upgrade Kit – Fitment:
Compatible with 6L80 6L90 2014+
Compatiible with 8L80 8L90 8L90E 2016+
Compatible with Cadillac Chevy G.MC cars and trucks Transmission 2014+
Bypass Gasket – Fitment:
CADILLAC ATS 2013-2018
CADILLAC CT4 2020
CADILLAC CT5 2020
CADILLAC CT6 2016-2020
CADILLAC CTS 2009-2019
CADILLAC ESCALADE 2007-2020
CADILLAC SRX 2007-2009
CADILLAC STS 2006-2011
CADILLAC XLR 2006-2009
CHEVROLET AVALANCHE 2009-2013
CHEVROLET CAMARO 2010-2021
CHEVROLET CAPRICE 2011-2017
CHEVROLET CHEYENNE 2010-2021
CHEVROLET COLORADO 2015-2021
CHEVROLET CORVETTE 2006-2019
CHEVROLET EXPRESS 2500 2010-2020
CHEVROLET EXPRESS 3500 2010-2020
CHEVROLET EXPRESS 4500 2010-2020
CHEVROLET EXPRESS CARGO 2020-2021
CHEVROLET EXPRESS PASAJEROS 2018-2020
CHEVROLET SILVERADO 1500 2009-2021
CHEVROLET SILVERADO 2500 2007-2021
CHEVROLET SILVERADO 3500 2007-2021
CHEVROLET SS 2015
CHEVROLET SUBURBAN 2014-2021
CHEVROLET SUBURBAN 1500 2009-2014
CHEVROLET SUBURBAN 2500 2008-2011
CHEVROLET TAHOE 2008-2021
CHEVROLET TRAILBLAZER 2021
Advantage:
1, Temperature Reduction: The upgrade kit is designed to significantly lower the operating temperatures of your transmission, potentially by almost 20%. This reduction in temperature is crucial for the longevity and efficiency of the transmission system.
2, Preventing Overheating: By managing heat more effectively, the kit helps to prevent overheating, especially during periods of high load. Overheating can lead to a variety of transmission issues, so this feature is essential for maintaining the health of your vehicle’s transmission.
3, Replacement of Defective Parts: If your current cooler flow bypass valve kit is broken, this upgrade kit serves as a high-quality replacement. It ensures that the transmission cooler functions properly, which is vital for the overall performance of your vehicle.
4, Continuous Coolant Flow: The kit ensures a steady flow of coolant to the transmission system at all times. This continuous flow is essential for keeping the transmission components adequately lubricated and cooled.
5, Transmission Cooling System Efficiency: By upgrading to this kit, you enhance the efficiency of your transmission cooling system. This can lead to improved performance and a reduced risk of transmission failure due to heat-related issues.




Doc –
No instructions. The manufacturing and finish of this is just OK. It could be better. Not polished at all. At least to no burrs or rough edges. I’m going to order another kit and if it’s in better condition, I’ll just install that before trusting this kit.
AML –
Installed it today and drove for 2 hours, works absolutely perfect. My transmission never got above 166 while driving, 180 while sitting idling. Used to go 230 within 20 mins. Just as good as the Shift Technology Superior Solutions brand which costs $40+ for the exact same thing. I don’t understand the other reviewer complaining about no instructions, those instructions are everywhere on Google just look it up, but you deduct two stars because it didn’t come with instructions? Dude it will save your transmission for $14! Just don’t over-torque that bolt when you put the tbv block back on, 16 ft/lb and no more, the threads are aluminum!