2nd Gen 5.9L Cummins Transmission

Eliminate weak points, handle brutal low-end torque, and bulletproof your drivetrain on your 1994-1998 2nd Gen 12V Cummins with heavy-duty transmission systems and replacement components. Factory transmissions are completely overwhelmed by the immense power output of a 12-valve diesel engine and heavy towing demands, leading to frequent slipping, overheating, and catastrophic failure. Upgrading to robust, high-performance transmission components—from heavy-duty coolers and pans to complete built transmissions—ensures reliable power transfer, crisp shifting, and long-term durability. Shop precision-engineered drivetrain parts built for exact factory fitment and extreme-duty performance.