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5.9L / 6.7L Diesel Transmission Upgrades

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194 Results

BD Diesel FleX-Plate: Fits Dodge Ram 2007-2018 5.7L/6.7L Diesel
Yukon Gear & Axle Yoke 9.25in AAM Front: Dodge Ram 2003-2016 5.7L/6.7L/6.4L
BD Diesel Differential Cover: Fits Dodge Ram / Chevy Duramax 2003-2018
Yukon Gear & Axle Master Overhaul Kit: Ram 2500 2014-2018 6.7L/6.4L

Yukon Gear & Axle Master Overhaul Kit: Ram 2500 2014-2018 6.7L/6.4L

Yukon Gear & Axle

$867.89

Unit price
per 

BD Diesel Electronic PressureLoc: Fits Dodge/Ram 2007-2022 Diesel
Eaton Detroit Truetrac LSD Diff 9.25in 31T: Ram 1500/2500/3500 2011-2018 3.6L-6.7L

Eaton Detroit Truetrac LSD Diff 9.25in 31T: Ram 1500/2500/3500 2011-2018 3.6L-6.7L

Eaton

Regular price $793.46 $729.99 Sale

Unit price
per 

Yukon Gear LSD 12.0in Rear Differential: Ram 3500 2019-2024 6.7L Diesel / 6.4L 392
Banks Power Black Diff Cover Kit 11.5/11.8-14 Bolt: Fits RAM 1500/2500/3500 3.6L-8.3L 2001-2024
usa

Banks Power Black Diff Cover Kit 11.5/11.8-14 Bolt: Fits RAM 1500/2500/3500 3.6L-8.3L 2001-2024

Banks Power

Regular price $438.89 $395.00 Sale

Unit price
per 

BD Diesel Billet Input Shaft: Fits Dodge Ram 2007-2018 5.7L/6.7L Diesel

Durable Transmission Upgrades for 5.9L Magnum and 6.7L Cummins Diesel Engines

The 5.9L Magnum and 6.7L Cummins diesel engines are built to deliver exceptional torque and towing strength in Ram trucks. These transmissions face intense stress from heavy loads and high torque output, making specialized upgrades essential for maintaining smooth shifting and long-term drivetrain reliability.

How transmission upgrades enhance torque handling on 5.9L and 6.7L diesels

Both the 5.9L Magnum and 6.7L Cummins engines generate substantial torque that can overwhelm stock transmission components over time. Upgrading with heavy-duty clutches, reinforced gears, and improved valve bodies helps these transmissions withstand increased torque loads while reducing wear and heat buildup.

  • Strengthened internal components resist clutch slippage and gear failure
  • Improved hydraulic circuits enhance shift firmness and response
  • Upgraded cooling solutions prevent overheating under heavy towing
  • Compatibility tailored to 5.9L Magnum and 6.7L Cummins transmissions

Key considerations when selecting transmission upgrades for diesel trucks

Choosing the right transmission upgrade depends on your truck’s usage, whether heavy towing, off-road hauling, or performance driving. It’s important to match upgrades to your engine’s torque curve and intended load to ensure reliable operation without sacrificing drivability or shift quality.

Shop 5.9L and 6.7L diesel transmission upgrades at FastHemis

FastHemis offers a range of transmission upgrade components designed specifically for the 5.9L Magnum and 6.7L Cummins diesel platforms. Enhance your Ram truck’s towing capability and drivetrain durability with parts engineered for these torque-heavy engines. Browse our collection to find the right transmission solutions for your diesel build.

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