2003-2008 Ram 1500 5.7L Hemi Complete Transmissions

The 545RFE transmission in your 2003-2008 Ram 1500 5.7L Hemi is a smooth operator, but it has its limits. When you start adding superchargers, lift kits, massive tires, or tow heavy loads daily, the stock clutches and shafts can struggle to keep up. Tier One offers high-performance, built 2003-2008 Ram 1500 5.7L Hemi transmissions designed to handle the abuse that the stock unit can't. Whether you need a reliable replacement for a work truck or a built unit for a street-performance build, we have you covered. Our transmissions are engineered to fix common failure points and provide the holding power you need to drive with confidence. Even the best transmission build needs a reliable connection to the engine, so if you are piecing together your own build or need a specific stall speed, look at our 2003-2008 Ram 1500 5.7L Hemi Torque Converters. Protect your investment from heat while towing by adding one of our 2003-2008 Ram 1500 5.7L Hemi Transmission Coolers. If you aren't ready for a complete transmission swap but want to fix shifting issues, a valve body replacement is a great place to start, so check out our 2003-2008 Ram 1500 5.7L Hemi Valve Bodies. To get the most out of your new transmission, consider upgrading your fluid capacity or installing a thermal bypass valve from our section of 2003-2008 Ram 1500 5.7L Hemi Transmission Parts.

About 2003-2008 Ram 1500 5.7L Hemi Complete Transmissions

The transmission in your 2003-2008 Ram 1500 5.7L Hemi is a workhorse, but every mechanical part has its limit. After years of heavy towing, high mileage, or aggressive driving, the stock transmission can start to slip, shudder, or fail completely. When that happens, you have a choice: go with a generic remanufactured unit that might have the same weak points, or upgrade to a built transmission from Tier One. We specialize in building 2003-2008 Ram 1500 5.7L Hemi transmissions that are designed to handle real-world abuse, from heavy hauling to high-horsepower street builds.

Tier One's built transmissions feature upgrades where it counts. We use high-performance clutches with increased friction surface area, stronger steels, upgraded input shafts, and modified valve bodies to ensure reliable shifts and massive power-holding capability. We offer different "Stages" of transmission builds so you can match the transmission to your specific needsâ€”whether it's a reliable daily driver replacement or a fully billet competition unit. Don't settle for stock; get a transmission that's built to last from Tier One.