2014-2018 Silverado & Sierra 1500 5.3L Transmission Parts

2014-2018 Silverado & Sierra 1500 5.3L owners rely on quality components to keep shifts crisp and reliability high. Browse Tier One's curated selection of transmission parts designed for stock rebuilds, towing, and performance builds. We offer everything from deep transmission pans that increase fluid capacity to thermal bypass valves that keep your fluid cool. Need help choosing the right setup? Contact Tier One or call 602-399-5484! If you are finding that you need to replace too many individual parts, swap the entire unit with one of our 2014-2018 Silverado & Sierra 1500 5.3L Complete Transmissions. One of the most critical parts for towing performance isn't inside the transmission case, but attached to the engine, so don't forget to grab one of our heavy-duty 2014-2018 Silverado & Sierra 1500 5.3L Torque Converters. While deep pans are great for holding more fluid, that fluid needs to be cooled effectively, so pair your new pan with one of our 2014-2018 Silverado & Sierra 1500 5.3L Transmission Coolers. The "brain" of your transmission controls how well these parts work, so look at our 2014-2018 Silverado & Sierra 1500 5.3L Valve Bodies.