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5.9L / 6.7L Diesel Transmission Upgrades

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140 Results

PPE Transmission Fluid Thermal Bypass Valve: Ram 2500 (19-24) / 3500 (19-24) 6.4L / 6.7L
PPE Transmission Fluid Thermal Bypass Valve: Ram 2500 (19-24) / 3500 (19-24) 6.4L / 6.7L
usa

PPE Transmission Fluid Thermal Bypass Valve: Ram 2500 (19-24) / 3500 (19-24) 6.4L / 6.7L

PPE

Regular price $79.99 $71.99 10% off

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per 

Banks Ram-Air Diff Cover Kit Natural: Fits Chevy/GMC 2020-2026 / RAM 2500/3500 2019-2026 AAM 14 Bolt
Banks Ram-Air Diff Cover Kit Natural: Fits Chevy/GMC 2020-2026 / RAM 2500/3500 2019-2026 AAM 14 Bolt
usa

Banks Ram-Air Diff Cover Kit Natural: Fits Chevy/GMC 2020-2026 / RAM 2500/3500 2019-2026 AAM 14 Bolt

Banks Power

Regular price $455.56 $410.00 10% off

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PPE Transmission Pan: Dodge Ram (07-24) 6.7L Cummins 68RFE Heavy-Duty Cast Aluminum
PPE Transmission Pan: Dodge Ram (07-24) 6.7L Cummins 68RFE Heavy-Duty Cast Aluminum
usa

PPE Transmission Pan: Dodge Ram (07-24) 6.7L Cummins 68RFE Heavy-Duty Cast Aluminum

PPE

Regular price from $305.99 Up to 10% off

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aFe Power Transmission Pan: Dodge Ram 2500 / Ram 3500 1994 - 2007 w/ Black Machined Fins
aFe Power Transmission Pan: Dodge Ram 2500 / Ram 3500 1994 - 2007 w/ Black Machined Fins
usa

aFe Power Transmission Pan: Dodge Ram 2500 / Ram 3500 1994 - 2007 w/ Black Machined Fins

aFe

Regular price $382.00 $362.90 5% off

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Revolution Gear & Axle 4.88 Ratio Gear Package: Dodge Ram 1500 (94-01) / Dakota (97-04)
usa

Revolution Gear & Axle 4.88 Ratio Gear Package: Dodge Ram (94-01)

Revolution Gear & Axle

$849.99

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ATS Diesel Billet Band Strut: Dodge Ram 2500 / Ram 3500 1994-2007
ATS Diesel Billet Band Strut: Dodge Ram 2500 / Ram 3500 1994-2007
usa

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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