2019-2021 Chevy & GMC Silverado & Sierra 1500 2.7L TurboMax Parts & Accessories

The 2.7L TurboMax engine in your 2019-2021 Silverado or Sierra 1500 puts down impressive power, but the 8-speed 8L90 transmission behind it is notorious for torque converter shudder and overheating. Tier One carries the essential drivetrain upgrades you need to fix these factory weak points and unlock the full potential of your truck. We have everything from billet torque converters and thermal bypass valves to deep transmission pans and high-efficiency coolers. Whether you use your TurboMax for daily commuting, towing, or off-roading, Tier One has the parts to keep your 8L90 shifting smoothly and running cool. 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 shuddering uncontrollably, reliable replacements are available, so check out our 2019-2021 Silverado & Sierra 1500 2.7L TurboMax Complete Transmissions. The factory torque converter is the root cause of the infamous "shudder," so solve it permanently with one of our billet 2019-2021 Silverado & Sierra 1500 2.7L TurboMax Torque Converters. The 8L90 runs hot by design, which kills fluid life, so keep your temps in check with our 2019-2021 Silverado & Sierra 1500 2.7L TurboMax Transmission Coolers. Erratic shifting and flares can be fixed with our updated 2019-2021 Silverado & Sierra 1500 2.7L TurboMax 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 2.7L TurboMax Transmission Parts.