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5.9L / 6.7L Diesel Transmission Upgrades

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194 Results

Banks Ram-Air Diff Cover Kit Black Ops: Fits Chevy/GMC 2020-2026 / RAM 2500/3500 2019-2026 AAM 14 Bolt
Banks Ram-Air Diff Cover Kit Black Ops: Fits Chevy/GMC 2020-2026 / RAM 2500/3500 2019-2026 AAM 14 Bolt
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Banks Ram-Air Diff Cover Kit Black Ops: Ram 1500 26 3.6L V6, Ram 2500 / 3500 19-24 6.4L 392

Banks Power

Regular price $472.22 $425.00 Sale

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

Banks Ram-Air Diff Cover Kit Satin Black: Ram 1500 26 3.6L V6, Ram 2500 / 3500 19-24 6.4L 392

Banks Power

Regular price $472.22 $425.00 Sale

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Banks Power Sway Bar Spacer Kit: RAM 2500/3500 2014-2024
Banks Power Sway Bar Spacer Kit: RAM 2500/3500 2014-2024
usa

Banks Power Sway Bar Spacer Kit: Fits Most Ram (11-25)

Banks Power

Regular price $43.33 $39.00 Sale

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Victor Reinz Axle Housing Cover Gasket: Fits Most Jeep / Dodge Models (1993-2010)
usa
Tuff Country Zinc Plated Rear Axle U-Bolts: Dodge Ram 1500 / Dakota 1994-2004
usa
Zone Offroad Posi-Lok Cable-Operated 4WD Engagement System: Fits Most Dodge Ram / Dakota Models (1994-2004)
usa

Zone Offroad Posi-Lok Cable 4WD System: Dodge Ram (94-01)

Zone Offroad

$219.94

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Revolution Gear & Axle 4.10 Ratio Gear Package: Dodge Ram 1500 (94-01) / Dakota (97-04)
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Revolution Gear & Axle 4.10 Ratio Gear Package: Dodge Ram (94-01)

Revolution Gear & Axle

$865.99

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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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Eaton ELocker4 Dana 60 Performance 35 Spline Differential: Dodge Ram 2500 / Ram 3500 (1994-2000)
Eaton ELocker4 Dana 60 Performance 35 Spline Differential: Dodge Ram 2500 / Ram 3500 (1994-2000)
Eaton ELocker4 Dana 60 Performance 35 Spline Differential: Dodge Ram 2500 / Ram 3500 (1994-2000)
Eaton ELocker4 Dana 60 Performance 35 Spline Differential: Dodge Ram 2500 / Ram 3500 (1994-2000)
Eaton Detroit Locker Diff 31 Spline (REAR): Fits Dodge / Chrysler (94-10)
Eaton Detroit Locker Diff 31 Spline (REAR): Fits Dodge / Chrysler (94-10)

Eaton Detroit Locker Diff 31 Spline (REAR): Fits Most Chrysler/Dodge (92-10)

Eaton

Regular price $1,246.72 $1,146.99 Sale

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Eaton Helical LSD Detroit Truetrac Diff 31 Spline (REAR): Fits Dodge / Chrysler (94-10)
Eaton Helical LSD Detroit Truetrac Diff 31 Spline (REAR): Fits Dodge / Chrysler (94-10)

Eaton Helical LSD Detroit Truetrac Diff 31 Spline (REAR): Fits Most Chrysler/Dodge (92-10)

Eaton

Regular price $891.29 $819.99 Sale

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Eaton Helical Gear LSD 30 Spline (REAR): Dodge Ram 2500 / 3500 (94-02)
Eaton Helical Gear LSD 30 Spline (REAR): Dodge Ram 2500 / 3500 (94-02)

Eaton Helical Gear LSD 30 Spline (REAR): Dodge Ram 2500/Ram 3500 94-02 8.0L/5.9L Diesel/5.7L/5.2L

Eaton

Regular price $1,358.69 $1,249.99 Sale

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Eaton Detroit Truetrac Helical LSD 30 Spline (REAR): Dodge Ram 2500 / 3500 (94-02)
Eaton Detroit Truetrac Helical LSD 30 Spline (REAR): Dodge Ram 2500 / 3500 (94-02)
Yukon Gear & Axle 9.25in Open Loaded Carrier Case: Fits Dodge Ram / Dakota / Durango (94-10)
Yukon Gear & Axle 9.25in Open Loaded Carrier Case: Fits Dodge Ram / Dakota / Durango (94-10)
Eaton Rear Master Install Kit (REAR): Dodge Dakota / Durango / Ram 1500 / Ram 2500 (97-04)
Eaton Rear Master Install Kit (REAR): Dodge Dakota / Durango / Ram 1500 / Ram 2500 (97-04)
Eaton Rear Master Install Kit: Fits Dodge / Chrysler (94-10)

Eaton Rear Master Install Kit: Fits Most Chrysler/Dodge (92-10)

Eaton

Regular price $191.61 $163.99 Sale

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per 

Eaton Master Install Kit (FRONT AND REAR): Dodge Ram 1500 / Ram 2500 / Ram 3500 1994-2002
Wehrli Grey Rear Diff Cover (REAR): Dodge Ram 2500 / 3500 (03-18)
Wehrli Grey Rear Diff Cover (REAR): Dodge Ram 2500 / 3500 (03-18)
usa

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

Wehrli

Regular price $414.00 $401.58 Sale

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Wehrli Gloss White Rear Differential Cover: Ram 2500 / Ram 3500 2019-2024
Wehrli Gloss White Rear Differential Cover: Ram 2500 / Ram 3500 2019-2024
usa

Wehrli Gloss White Rear Differential Cover: Ram 2500 / 3500 19-24 6.7L Diesel/6.4L

Wehrli

Regular price $389.00 $377.33 Sale

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Wehrli Red Rear Differential Cover: Ram 2500 / 3500 (19-24)
Wehrli Red Rear Differential Cover: Ram 2500 / 3500 (19-24)
usa

Wehrli Red Rear Differential Cover: Ram 2500 / 3500 19-24 6.7L Diesel/6.4L

Wehrli

Regular price $414.00 $401.58 Sale

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per 

Mishimoto Cast Transmission Pan: Fits Dodge / Jeep (01-23) - Gunmetal Gray
Mishimoto Cast Transmission Pan: Fits Dodge / Jeep (01-23) - Gunmetal Gray

Mishimoto Cast Transmission Pan Gunmetal Gray (BOTTOM): Fits Ram 2008-2023 6.7L Diesel

Mishimoto

Regular price $417.00 $378.95 Sale

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Fleece Performance PowerFlo 750: Dodge Ram 2500 / Ram 3500 2004-2007
Fleece Performance PowerFlo 750: Dodge Ram 2500 / Ram 3500 2004-2007
usa
Fleece Performance PowerFlo 750: Dodge Ram 2500 / Ram 3500 2007-2010 / 2011-2014
Fleece Performance PowerFlo 750: Dodge Ram 2500 / Ram 3500 2007-2010 / 2011-2014
usa
Fleece Performance CP3K Fuel Pump: Dodge Ram 2500 / Ram 3500 2007-2014
Fleece Performance CP3K Fuel Pump: Dodge Ram 2500 / Ram 3500 2007-2014
usa
Fleece Performance CP3K Fuel Pump: Dodge Ram 2500 / Ram 3500 2004-2007
Fleece Performance CP3K Fuel Pump: Dodge Ram 2500 / Ram 3500 2004-2007
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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