5.9L / 6.7L Diesel Transmission Upgrades
PPE Transmission Fluid Thermal Bypass Valve Billet Aluminum: Ram 2500 / 3500 2019-2024 6.4L / 6.7L Diesel
PPE
$79.99
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PPE HD Cast Aluminum Transmission Pan w/ Deep Spin-On Filter: Fits Dodge/Ram 2007-2024 6.7L Cummins 68RFE
PPE
from $339.99
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Yukon Gear & Axle Hardcore Nodular Iron Rear Diff Cover: Fits Most Dodge/Ram (92-19) - Black
Yukon Gear & Axle
$248.89
- Unit price
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aFe Power Transmission Pan: Dodge Ram 2500 / Ram 3500 94-07 5.9L Diesel w/ Black Machined Fins
aFe
$382.00
- Unit price
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aFe Pro Series Front Diff Cover w/ Machined Fins: Ram 2500 / 3500 13-23 6.7L Diesel/6.4L/5.7L
aFe
$354.00
- Unit price
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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
10% off
- Unit price
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Banks Power Sway Bar Spacer Kit: Fits Most Ram (11-25)
Banks Power
Regular price
$43.33
$39.00
10% off
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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
10% off
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aFe Pro Series Front & Rear Diff Guard Package: Ram 2500 / 3500 19-26 6.7L Diesel w/ Oil
aFe
$925.00
- Unit price
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Yukon Gear LSD Rear Diff 11.5in (REAR): Ram 2500/3500 2019-2024 6.4L/6.7L
Yukon Gear & Axle
$951.89
- Unit price
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BD Diesel Aisin ProForce Torque Converter: Ram 3500 2013-2018 6.7L Diesel
BD Diesel
$1,041.95
- Unit price
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Yukon Gear Standard Open Carrier Case Chrysler 10.5in: Dodge Ram 1500/2500 2003-2013 3.7L/5.7L Hemi
Yukon Gear & Axle
$339.89
- Unit price
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Yukon Gear Standard Open Carrier Case 29 Spline 8.25in (REAR): Fits Dodge 1992-2010
Yukon Gear & Axle
$560.89
- Unit price
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Yukon Gear & Axle Hi-Perf Front Ring & Pinion Gear Set 9.25in 3.73 Ratio (FRONT): Fits Dodge Ram 2003-2013
Yukon Gear & Axle
$710.89
- Unit price
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Yukon Gear & Axle Hi-Perf Front Gear Set 9.25in 3.42 Ratio: Fits Dodge/Ram 2003-2013 5.7L/6.7L
Yukon Gear & Axle
$592.89
- Unit price
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Yukon Rear 4340 Chrome-Moly Axle 38 Spline 10.5in/11.5in 36.1-40.1in Length (REAR): Fits Dodge Ram 2500/3500 2003-2018 5.7L/6.7L
Yukon Gear & Axle
$723.89
- Unit price
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Yukon Gear & Axle Hi-Perf Gear Set 9.25in 4.88 Ratio (FRONT): Fits Dodge Ram 2003-2010 5.7L / 5.9L Diesel / 3.7L V6
Yukon Gear & Axle
$595.89
- Unit price
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Yukon Gear & Axle Reverse Ring & Pinion 4.11 Ratio (FRONT): Fits Ram 2014-2023 5.7L/6.4L/6.7L
Yukon Gear & Axle
$583.89
- Unit price
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Yukon Gear & Axle Axle 10.5Aam/11.5Aam 30 Spline: Fits Dodge Ram 2003-2014 5.7L/6.7L
Yukon Gear & Axle
$323.89
- Unit price
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Yukon Gear & Axle Reverse Ring & Pinion 4.56 Ratio: Fits Ram 2014-2023 5.7L/6.4L/6.7L
Yukon Gear & Axle
$583.89
- Unit price
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Yukon Gear Chrysler 10.5/11.5in 30 Spline 4340 Full Float Axle: Fits Dodge Ram 2500/3500 2003-2018 5.7L/6.7L
Yukon Gear & Axle
$676.89
- Unit price
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Yukon Gear & Axle Hi-Perf Front Ring & Pinion Gear Set 9.25in 3.73 Ratio (FRONT): Fits Ram 2500/3500 2014-2023
Yukon Gear & Axle
$583.89
- Unit price
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Yukon Gear & Axle Hi-Perf Gear Set 4.11 Ratio (REAR): Fits Dodge Ram 2003-2013 5.7L/5.9L/6.7L
Yukon Gear & Axle
$592.89
- Unit price
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Yukon Gear Minor Install Kit For GM & Chrysler 11.5in Diff: Fits Dodge Ram / Ram 2003-2016 5.7L/6.7L Diesel
Yukon Gear & Axle
$154.89
- Unit price
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Yukon Gear & Axle Hi-Perf Front Gear Set 9.25in 3.42 Ratio: Ram 2500/3500 2014-2023 5.7L/6.7L
Yukon Gear & Axle
$583.89
- Unit price
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Yukon Gear Chrysler 11.5in 30 Spline 4340 Axle: Fits Dodge Ram 2500/3500 2003-2018 5.7L/6.7L
Yukon Gear & Axle
$615.89
- Unit price
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Yukon Gear & Axle Standard Carrier Case 9.25in Front: Fits Ram 2500/3500 2011-2024
Yukon Gear & Axle
$609.89
- Unit price
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Yukon Gear & Axle Pinion Install Kit 11.5in Diff: Fits Ram 2011-2016 5.7L/6.7L
Yukon Gear & Axle
$481.89
- Unit price
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Yukon Gear & Axle Outer Stub Axle 9.25in (FRONT): Ram 2500/3500 2010-2018 5.7L/6.7L Hemi/Diesel
Yukon Gear & Axle
$247.89
- Unit price
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Yukon Gear & Axle Hi-Perf Gear Set 4.56 Ratio (FRONT): Fits Dodge Ram 2003-2013 5.7L/5.9L/6.7L
Yukon Gear & Axle
$592.89
- Unit price
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Yukon Gear & Axle 1541H Alloy Rear Axle 10.5in 36.75in Length 30-Spline: Dodge Ram 2500 2003-2011 5.7L/6.7L
Yukon Gear & Axle
$281.89
- Unit price
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Yukon Rear Axle 10.5in 36.75in Long (REAR): Dodge Ram 2500 2005-2011 5.7L/6.7L Diesel
Yukon Gear & Axle
$281.89
- Unit price
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Yukon Gear Standard Open Carrier Case 11.5in: Ram 2500/3500 2003-2018 5.7L/6.7L
Yukon Gear & Axle
$775.89
- Unit price
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Yukon Gear Dura Grip LSD 11.5in 30 Spline: Fits Dodge Ram 2500/3500 2003-2019 5.7L/6.7L
Yukon Gear & Axle
$1,719.89
- Unit price
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Yukon Hi-Perf Gear Set 11.5in 3.42 Ratio (REAR) w/ Coil Springs: Ram 2500 2014-2019 5.7L/6.4L
Yukon Gear & Axle
$656.89
- Unit price
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Yukon Gear & Axle 10.5/11.5AAM 38-Spline Axle: Dodge Ram 2500/3500 2003-2014 5.7L/6.7L Hemi/Diesel
Yukon Gear & Axle
$366.89
- Unit price
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Yukon 4340 1550 Outer Stub Axle 9.25in: Ram 2500 / 3500 2010-2018 5.7L Hemi / 6.7L Diesel
Yukon Gear & Axle
$325.89
- Unit price
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Yukon Gear & Axle Pinion Install Kit 9.25in Front Diff (FRONT): Fits Dodge Ram 2003-2018 3.6L-8.3L
Yukon Gear & Axle
$293.89
- Unit price
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Yukon Gear & Axle 9.25in Front Axle 1485 U-Joint (FRONT): Fits Dodge Ram 2003-2016 3.6L-8.3L
Yukon Gear & Axle
$192.89
- Unit price
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BD Diesel Stg 5 68RFE Trans & Converter Pkg Billet Input: Ram 2500 / 3500 2019-2024 6.7L Diesel
BD Diesel
$8,594.95
- Unit price
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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.