Aftermarket Cummins Transmissions, Parts, & Rebuild Kits

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Next Gen Diesel is the go-to source for high-quality aftermarket Cummins transmissions, parts, and rebuild kits. We have various options for Ram trucks that range from 1996-2019. If you need transmissions or parts for your diesel truck between 1996-2003, you need to select from our 47RE Cummins transmission and parts. For a Ram truck between 2003-2007, you’ll want to Cummins 48RE select parts and/or the 48RE transmission. From 2007-2019, the 68RE transmission and parts will work best for your truck. Our aftermarket Cummins transmissions, parts, and rebuild kits are expertly made from high-quality materials, which ensures your diesel truck will run smoothly no matter what you put it through. Our aftermarket Cummins products are more affordable than comparable parts from a dealership.