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5.9L / 6.7L Diesel Transmission Upgrades

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194 Results

Wehrli Gloss Black Rear Diff Cover: Dodge Ram 2500 (2003-2018) / Ram 3500 (2003-2018)
Wehrli Gloss Black Rear Diff Cover: Dodge Ram 2500 (2003-2018) / Ram 3500 (2003-2018)
usa

Wehrli Gloss Black Rear Diff Cover: Fits Most Dodge/Ram 6.7L Diesel/5.9L Diesel (03-18)

Wehrli

Regular price $389.00 $377.33 Sale

Unit price
per 

Wehrli Rear Differential Cover (REAR): Ram 2500 / 3500 2019-2024 w/ Grey
Wehrli Rear Differential Cover (REAR): Ram 2500 / 3500 2019-2024 w/ Grey
usa

Wehrli Rear Differential Cover (REAR): Ram 2500 / 3500 19-24 6.7L Diesel/6.4L w/ Grey

Wehrli

Regular price $414.00 $401.58 Sale

Unit price
per 

Yukon Gear Spin Free Locking Hub Conversion Kit: Ram 2500/3500 2012-2018 5.7L/6.7L
Yukon Gear LSD Rear Diff 11.5in (REAR): Ram 2500/3500 2019-2024 6.4L/6.7L

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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