Part # 309-912-2272

ATS 48RE PERFORMANCE TRANSMISSION PACKAGES FOR 2003-2007 DODGE 5.9L CUMMINS

$4,643.63

ATS 48RE Performance Transmission

Fitment: 2004½-2007 Dodge 5.9L Cummins

The ATS 48RE Performance Transmission is engineered to handle high-torque, high-horsepower applications in your Dodge Ram 5.9L Cummins. This heavy-duty transmission includes key upgrades to improve durability, shifting performance, and reliability under extreme conditions. Designed for towing, racing, and daily driving, the ATS 48RE provides the ultimate upgrade over your factory transmission.


  • Heavy-Duty Torque Converter: Designed for high-torque loads and increased durability.
  • Upgraded Valve Body: Ensures crisp, clean shifts with precise hydraulic control.
  • Reinforced Shafts: Built to handle increased torque and power.
  • High-Performance Clutch Packs: Designed for increased holding capacity and power transfer.
  • Improved Cooling System: Deep transmission pan for better heat dissipation.

The ATS 48RE Performance Transmission is built for Dodge Ram 5.9L Cummins owners seeking superior durability and enhanced shifting performance. The stock 48RE transmission is known for its limitations when subjected to high horsepower and torque loads, particularly in towing or high-performance applications. To address these shortcomings, ATS has developed a series of comprehensive upgrades to increase the strength and reliability of the 48RE transmission.

This performance transmission features a reinforced torque converter that improves power transfer while minimizing slippage under heavy loads. Additionally, the upgraded valve body provides smoother, quicker shifts, optimizing hydraulic control and improving overall performance. The high-performance clutch packs offer greater holding power, preventing premature wear and tear, especially when pushing the limits of horsepower and torque.

To manage heat generated under heavy loads, the ATS 48RE comes equipped with a deep transmission pan, which increases fluid capacity and improves cooling. Whether you’re towing, racing, or driving daily, the ATS 48RE is designed to deliver reliability and smooth performance, all while maintaining factory functionality. For those looking to push their 5.9L Cummins to the next level, this transmission is an essential upgrade.


Kit Contents:

  • Upgraded Torque Converter
  • Heavy-Duty Valve Body
  • Reinforced Input and Output Shafts
  • Performance Clutch Packs
  • Deep Transmission Pan

Important Notes:

  • ATS recommends pairing the 48RE with their Co-Pilot® Transmission Controller for maximum performance.
  • Custom tuning may be required for optimal performance based on your vehicle's modifications.

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