Looking for the best Cummins transmission replacements? We’ve curated a list of top-quality upgrades to boost performance, durability, and reliability for your truck.
Cummins engines are known for their power and reliability, but even the best transmissions need upgrades or replacements over time. Whether you’re towing heavy loads or just want smoother performance, the right parts can make all the difference. This guide highlights the best Cummins transmission replacements to keep your truck running at its peak.
We’ve handpicked top-quality products that boost cooling, improve durability, and enhance performance. From premium service kits to sturdy transmission pans, these upgrades are designed to meet or exceed OEM standards. You’ll find everything you need to protect your investment and extend your truck’s lifespan.
Ready to upgrade your Cummins transmission? Dive in to discover the perfect parts for your truck. Whether you’re a DIY enthusiast or prefer professional installation, this guide has you covered. Let’s get started!
List of Top 10 Cummins Transmission Replacements
| Image | Title | Best For | Price |
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68RFE Transmission Service Kit & Fluid & Premium Cork Rubber Gasket Compatible with 4WD 2007.5-2024 6.7L Cummins 2500/3500 | Replaces # 5013470AC | (8) 68218057AC (68218057AB) |
Get this kit if you own a 4WD Cummins pickup or 2500 and 3500 truck. It fits the 2007.5 to 2024 models with a 68RFE transmission. |
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Mishimoto MMTC-RAM-03SL Trans Cooler, Ram 2500-5500 Cummins 2003-09, Silver |
The Mishimoto MMTC-RAM-03SL Trans Cooler is perfect for Dodge Ram owners who tow heavy loads or work their trucks hard. If you drive a 2003–2009 Ram 2500, 3500, 4500, or 5500 with a Cummins diesel engine, this direct-fit upgrade will keep your transmission cool under tough conditions. |
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Sporthfish 68RFE Transmission Spin On Filter Screw Steel Upgrade for 2007-2021 Dodge Ram 2500 3500 Cummins Diesel 6.7L Engine, Silver |
This Sporthfish 68RFE Transmission Spin On Filter Screw Steel Upgrade is perfect for Dodge Ram 2500 and 3500 owners with a 6.7L Cummins Diesel Engine. If you want a stronger, more reliable connection for your transmission filter, this steel upgrade is for you. |
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Mishimoto MMTC-RAM-94SL Transmission Cooler, Compatible with Dodge Ram Cummins 5.9L, 1994-2002, Silver |
This transmission cooler is perfect for Dodge Ram Cummins 5.9L owners who tow, haul, or drive hard. It keeps your transmission cool and works great for 1994-2002 models. |
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Mishimoto Transmission Pan for Dodge Ram 6.7L Cummins 2007.5-2024 |
This Mishimoto Transmission Pan is perfect for Dodge Ram 6.7L Cummins owners who want better cooling and long-lasting performance. It’s easy to install and increases fluid capacity, making it ideal for daily drivers or heavy-duty use. |
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Cast Alum. Trans Pan for 94-07 Dodge/RAM 2500, 3500 w/5.9L Cummins Diesel |
This Cast Aluminum Transmission Pan is perfect for owners of 1994-2007 Dodge/RAM 2500 or 3500 trucks with a 5.9L Cummins Diesel engine. If you want to improve performance and protect your transmission, this is the ideal upgrade for you. |
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3923045 Transmission Adapter Plate for Ram 2500 3500 5.9L 1994-2002 3965232 |
This transmission adapter plate is perfect for Dodge Ram 2500/3500 owners with a 5.9L Cummins engine (1994-2002) who need a reliable replacement for their old or broken part. It’s ideal for those looking for a precise fit and premium quality to keep their truck running smoothly. |
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maXpeedingrods 48RE Transmission Cooler Lines Kit for Dodge Ram 2500/3500 |
This 48RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 owners who want to upgrade their transmission cooling system. It’s ideal for those with 2003-2007 Cummins 5.9L engines looking to replace rusted or leaking lines with durable, high-performance parts. |
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maXpeedingrods 47RE Transmission Cooler Lines Kit for Dodge Ram 2500/3500 |
This maXpeedingrods 47RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 owners who need a reliable and durable replacement for their transmission cooler lines. It’s easy to install and fits perfectly, making it ideal for DIY enthusiasts or those looking to upgrade their truck’s performance. |
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68RFE Transmission Spin On Filter Screw Steel Upgrade for 2007.5-2021 Ram 2500 3500 Cummins 6.7L, Stainless Steel Filter Adapter Bolt Replacement for Filter Kit Change |
Dodge Ram owners of models from 2007.5 to 2021 with a 6.7L Cummins engine need this part. It stops the plastic screw from breaking and saves you cash on repair work. |
Detailed Reviews
Discover the top 10 Cummins Transmission Replacements, handpicked for reliability and performance. Each product is expert-reviewed and customer-approved, ensuring you get the best value for your truck. Whether you’re upgrading or replacing, this guide makes it easy to find the perfect fit.
1. 68RFE Transmission Service Kit & Fluid & Premium Cork Rubber Gasket Compatible with 4WD 2007.5-2024 6.7L Cummins 2500/3500 | Replaces # 5013470AC | (8) 68218057AC (68218057AB)
Keep your 6.7L Cummins truck running smoothly with this complete transmission service kit. It’s compatible with 2007.5-2024 Ram 2500/3500 4WD models. The kit includes everything you need for a full transmission filter service.
The premium cork rubber gasket ensures a tight seal, while the filter media keeps fluid clean. This kit meets or exceeds OEM standards for reliable performance.
With 8 quarts of ATF+4 fluid, you’ll have enough for most systems. Note: Your truck may need more or less fluid, so check carefully. This kit replaces OE# 5013470AC and 68218057AC (68218057AB).
| Pros | Cons |
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Perfect For:
Get this kit if you own a 4WD Cummins pickup or 2500 and 3500 truck. It fits the 2007.5 to 2024 models with a 68RFE transmission.
Ready to Purchase?
2. Mishimoto MMTC-RAM-03SL Trans Cooler, Ram 2500-5500 Cummins 2003-09, Silver
Upgrade your truck’s transmission system with this Mishimoto transmission cooler designed for 2003-2009 Dodge Rams. It fits securely on 5.9L and 6.7L Cummins trucks with 47RE, 48RE, or 68RFE transmissions.
Get 212% more cooling capacity with this stacked-plate core and replace corroded OEM fittings with smooth stainless steel barbs. The internal bypass valve prevents overheating when temperatures rise. Your transmission stays cooler during serious towing and heavy workloads.
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Perfect For:
The Mishimoto MMTC-RAM-03SL Trans Cooler is perfect for Dodge Ram owners who tow heavy loads or work their trucks hard. If you drive a 2003–2009 Ram 2500, 3500, 4500, or 5500 with a Cummins diesel engine, this direct-fit upgrade will keep your transmission cool under tough conditions.
Ready to Purchase?
3. Sporthfish 68RFE Transmission Spin On Filter Screw Steel Upgrade for 2007-2021 Dodge Ram 2500 3500 Cummins Diesel 6.7L Engine, Silver
The Sporthfish 68RFE Filter Screw is a strong steel upgrade for your Dodge Ram. It replaces the weak plastic screw that comes from the factory. This keeps your transmission filter secure and prevents damage.
This kit fits 2007-2021 Dodge Ram 2500 & 3500 with a 6.7L Cummins Diesel Engine. It works with both stock and upgraded transmissions. The OEM-sized screw fits perfectly and is built to last.
Installation is quick and easy. Use a 1/2″ wrench to remove the old screw, then tighten the new one with a 7/8″ wrench. This simple fix ensures your transmission stays safe and trouble-free.
| Pros | Cons |
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Perfect For:
This Sporthfish 68RFE Transmission Spin On Filter Screw Steel Upgrade is perfect for Dodge Ram 2500 and 3500 owners with a 6.7L Cummins Diesel Engine. If you want a stronger, more reliable connection for your transmission filter, this steel upgrade is for you.
Ready to Purchase?
4. Mishimoto MMTC-RAM-94SL Transmission Cooler, Compatible with Dodge Ram Cummins 5.9L, 1994-2002, Silver
The Mishimoto MMTC-RAM-94SL Transmission Cooler is perfect for Dodge Ram Cummins 5.9L models (1994-2002). It fits right into your truck without extra work. Enjoy better cooling and stronger performance for towing and hauling.
This cooler is built tough with high-quality materials. It comes with easy-to-use hose connections for a hassle-free upgrade.
| Pros | Cons |
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Perfect For:
This transmission cooler is perfect for Dodge Ram Cummins 5.9L owners who tow, haul, or drive hard. It keeps your transmission cool and works great for 1994-2002 models.
Ready to Purchase?
5. Mishimoto Transmission Pan for Dodge Ram 6.7L Cummins 2007.5-2024
The Mishimoto Transmission Pan is a direct fit for 2007.5-2024 Dodge Ram 6.7L Cummins trucks. It’s made of durable cast-aluminum for long-lasting performance.
This pan increases fluid capacity by 2.6 quarts, boosting cooling capacity. Bolt retainers make installation easy, and it comes with a lifetime warranty.
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Perfect For:
This Mishimoto Transmission Pan is perfect for Dodge Ram 6.7L Cummins owners who want better cooling and long-lasting performance. It’s easy to install and increases fluid capacity, making it ideal for daily drivers or heavy-duty use.
Ready to Purchase?
6. Cast Alum. Trans Pan for 94-07 Dodge/RAM 2500, 3500 w/5.9L Cummins Diesel
This Cast Aluminum Transmission Pan is made for 1994-2007 Dodge/RAM 2500 and 3500 trucks. It fits models with the 5.9L Cummins Diesel engine.
The pan works with 47RE, 47RH, and 48RE transmissions. It is 5.700 inches deep for extra fluid capacity.
Easy to install, durable, and lightweight. Keeps your transmission cool and protected.
| Pros | Cons |
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Perfect For:
This Cast Aluminum Transmission Pan is perfect for owners of 1994-2007 Dodge/RAM 2500 or 3500 trucks with a 5.9L Cummins Diesel engine. If you want to improve performance and protect your transmission, this is the ideal upgrade for you.
Ready to Purchase?
7. 3923045 Transmission Adapter Plate for Ram 2500 3500 5.9L 1994-2002 3965232
The 3923045 Transmission Adapter Plate is a direct replacement for your old or broken part. It fits Dodge Ram 2500 and 3500 models from 1994 to 2002. This plate works with Cummins 5.9L engines.
This kit includes one transmission adapter plate, one white stopper, and two screws. All parts are factory inspected to ensure premium quality.
We recommend professional installation for this product. Teilelager guarantees product quality for 12 months after purchase.
| Pros | Cons |
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Perfect For:
This transmission adapter plate is perfect for Dodge Ram 2500/3500 owners with a 5.9L Cummins engine (1994-2002) who need a reliable replacement for their old or broken part. It’s ideal for those looking for a precise fit and premium quality to keep their truck running smoothly.
Ready to Purchase?
8. maXpeedingrods 48RE Transmission Cooler Lines Kit for Dodge Ram 2500/3500
The maXpeedingrods 48RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 trucks with a 5.9L Cummins engine and 48RE transmission from 2003 to 2007. It’s made of premium stainless steel with a fiber outer layer for durable cooling and smooth fluid flow.
This kit replaces old, rusty lines, boosts heat dissipation, and comes with all fittings for easy installation. It includes three lines, four adapters, and lifetime support with a 1-year warranty.
| Pros | Cons |
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Perfect For:
This 48RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 owners who want to upgrade their transmission cooling system. It’s ideal for those with 2003-2007 Cummins 5.9L engines looking to replace rusted or leaking lines with durable, high-performance parts.
Ready to Purchase?
9. maXpeedingrods 47RE Transmission Cooler Lines Kit for Dodge Ram 2500/3500
The maXpeedingrods 47RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 trucks. It fits 1996-2002 models with 5.9L engines and 47RE transmissions. It also works with 1994-1995 47RH but needs extra fittings.
This kit is made of high-quality materials that are durable and long-lasting. It’s wear-resistant and corrosion-resistant, ensuring reliable performance. The sturdy design makes it a great replacement for old or damaged parts.
Installation is easy and straightforward, with no complex tools needed. The package includes everything you need: 3 braided lines, 4 fittings, and 2 adapters. Professional installation is recommended for best results.
| Pros | Cons |
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Perfect For:
This maXpeedingrods 47RE Transmission Cooler Lines Kit is perfect for Dodge Ram 2500/3500 owners who need a reliable and durable replacement for their transmission cooler lines. It’s easy to install and fits perfectly, making it ideal for DIY enthusiasts or those looking to upgrade their truck’s performance.
Ready to Purchase?
10. 68RFE Transmission Spin On Filter Screw Steel Upgrade for 2007.5-2021 Ram 2500 3500 Cummins 6.7L, Stainless Steel Filter Adapter Bolt Replacement for Filter Kit Change
Upgrade your 68RFE transmission with this stainless steel filter screw. It replaces the weak plastic coupler found in many trucks. This prevents costly damage by keeping the filter secure.
Fits 2007.5-2021 Ram 2500/3500 trucks with 6.7L Cummins engines. Perfect for 4th and 5th Gen models. Essential for filter kit changes or fluid services.
Easy to install with basic tools. Reusable and rust-free, saving you money. Drive worry-free with a rock-solid filter connection.
| Pros | Cons |
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Perfect For:
Dodge Ram owners of models from 2007.5 to 2021 with a 6.7L Cummins engine need this part. It stops the plastic screw from breaking and saves you cash on repair work.
Ready to Purchase?
Buying Guide
Cummins engines are powerful and reliable, but even the best transmissions need upgrades over time. This guide helps you find the best Cummins transmission replacements to keep your truck running smoothly.
Engaging Experience:
Whether you’re towing heavy loads or want smoother performance, the right parts make all the difference. We’ve handpicked top-quality upgrades to boost cooling, durability, and performance, so you can protect your investment and extend your truck’s lifespan.
Factors to Consider When Buying:
– Compatibility: Ensure the part fits your truck’s make, model, and year. Check engine size and transmission type for a perfect match.
– Quality: Look for parts that meet or exceed OEM standards. High-quality materials like stainless steel or cast aluminum ensure durability.
– Cooling Capacity: Upgrades like transmission coolers or pans with extra fluid capacity help prevent overheating during heavy use.
– Ease of Installation: Choose parts with simple installation processes. Some may require professional help, while others are DIY-friendly.
– Warranty: Opt for products with warranties for peace of mind. Lifetime warranties are a great sign of quality.
– Price: Balance cost with quality. Investing in premium parts can save money in the long run by avoiding frequent replacements.
– Purpose: Consider your truck’s use. If you tow often, focus on cooling upgrades and durable components.
Ready to upgrade? Dive into our top picks for Cummins transmission replacements and keep your truck running at its peak!