2020-2021 Chevy & GMC 1500 3.0L Duramax Transmission Coolers

The 3.0L Duramax under the hood of your 2020-2021 Silverado or Sierra 1500 throws down seriously impressive torque, but you can unlock even more capability with performance drivetrain parts from Tier One. We have all the upgrades for 2020-2021 Silverado or Sierra Duramax trucks that you need to bulletproof your transmission and put that diesel power to the ground. Tier One has everything from our very own lineup of built Silverado & Sierra Duramax transmissions and rebuild kits that handle more power than stock to essential durability upgrades like high-performance torque converters, thermal bypass valves, and deep transmission pans. Whether you are towing a heavy trailer or hitting the trails, Tier One can help your Silverado or Sierra diesel tear it up without worrying about transmission failure. If you don't see what you're looking for, contact Tier One or call 602-399-5484! If your stock transmission has failed or is slipping, reliable replacements are available, so check out our 2020-2021 Chevy & GMC 1500 3.0L Duramax Complete Transmissions. The factory torque converter is prone to flexing under load, so get better power transfer and reliability with one of our billet 2020-2021 Chevy & GMC 1500 3.0L Duramax Torque Converters. The 10L80 runs hot by design, which kills fluid life, so keep your temps in check with our 2020-2021 Chevy & GMC 1500 3.0L Duramax Transmission Coolers. Low lubrication pressure causes premature failure in these units, but you can fix it permanently with our 2020-2021 Chevy & GMC 1500 3.0L Duramax Valve Bodies. Finally, whether you need a deep pan for extra capacity or a thermal bypass valve, find it in our section of 2020-2021 Chevy & GMC 1500 3.0L Duramax Transmission Parts.