2019-2021 Chevy & GMC Silverado & Sierra 1500 6.2L Parts & Accessories

The big 6.2L V8 under the hood of your 2019-2021 Silverado or Sierra 1500 offers a ton of power, but the factory 10L80 transmission often struggles to keep up with the demands of towing and high-performance driving. Tier One carries the essential drivetrain upgrades you need to fix common transmission issues and improve reliability. We have everything from high-performance valve bodies and billet torque converters to deep transmission pans and thermal bypass valves. Whether you are towing a heavy trailer or ripping down the drag strip, Tier One has the parts to keep your 10L80 shifting firmly and running cool. We are your one-stop-shop for Silverado & Sierra transmission performance. If you don't see something 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 2019-2021 Silverado & Sierra 1500 6.2L Complete Transmissions. The factory torque converter is prone to flexing and shuddering, so get better power transfer and reliability with one of our billet 2019-2021 Silverado & Sierra 1500 6.2L Torque Converters. The 10L80 runs hot by design, which kills fluid life, so keep your temps in check with our 2019-2021 Silverado & Sierra 1500 6.2L Transmission Coolers. Low lubrication pressure causes premature failure in these units, but you can fix it permanently with our 2019-2021 Silverado & Sierra 1500 6.2L Valve Bodies. Finally, whether you need a deep pan for extra capacity or a thermal bypass valve, find it in our section of 2019-2021 Silverado & Sierra 1500 6.2L Transmission Parts.