Does your truck feel sluggish when you step on the gas? Many Ram owners know that the 68RFE transmission is a powerhouse, but it often hits a wall when it comes to power delivery. The torque converter is the secret link between your engine and the road. If yours is failing or slipping, you are wasting precious horsepower and risking serious damage to your drivetrain.
Choosing the right replacement is rarely simple. The market is flooded with confusing technical jargon, different stall speeds, and varying price points. It is easy to feel overwhelmed when you just want a reliable truck that can handle heavy towing or extra performance mods. Buying the wrong part can lead to poor fuel economy, overheating, or even another broken transmission down the line.
In this guide, we cut through the noise to help you find the perfect match for your driving style. We will break down exactly what you need to look for, from billet steel upgrades to improved clutch materials. You will learn how to identify the right stall speed and why build quality matters more than the sticker price.
Stop guessing which parts will actually stand up to the torque of your Cummins engine. Let’s dive into the essential details you need to make an informed choice and get your truck back to peak performance.
Top 68Rfe Torque Converter Recommendations
- TO-657 68RFE transmission torque converter DUAL DISCS for 6.7L diesel (NOT ACTUAL PICTURE SHOWN)
- Mount : 6 HOLES - (NOT ACTUAL PICTURE SHOWN)
- Spline : 27
- 1 Year Limited Warranty
- Please send your vehicle info: Year, Make, Model, Engine Size and Transmission model after purchase using Amazon MESSAGING system.
- Torque Converter Lock-UP, Factory Low Stall
- Will work for all years of 68RFE Transmissions with the Dodge 6.7L Cummins Diesel Engines
- FITS: 6.7L Diesel (2007-2015) Comes with a 1 Year warranty (if it was properly installed)
- Boosts 68RFE Line Pressure: Increases transmission line pressure by approximately 10–15 psi, improving clutch clamping force, torque capacity, and overall shift integrity in diesel-equipped vehicles.
- Enhances Shift Quality: Provides firmer, more responsive gear changes and reduces shift lag, offering improved drivability during towing, hauling, or everyday operation.
- Simple Plug-and-Play Installation: Installs externally with no transmission disassembly required, enabling a quick, clean upgrade to the factory pressure control system.
- Supports Long-Term Transmission Durability: Higher line pressure promotes stronger clutch engagement and reduced slippage, helping extend the service life of the 68RFE transmission under increased load.
- Michigan Motorsports Quality: Built with durable components and reliable electrical design to ensure stable performance across a wide range of Dodge and Chrysler diesel applications.
![ATSG 68RFE Manual DODGE Transmission Repair Manual (68RFE Gasket 68RFE Rebuild Kit 68RFE Transmission Pan 68RFE Transmission Filter Best Repair Book Available) [Automotive]](https://m.media-amazon.com/images/I/51ZgArrBfsL._SL160_.jpg)
- Our REMCO Rebuild Kits Only Contain OEM Components from Industry-Leading Suppliers
- Note: International orders "Buyer pays for import tax duties and expenses"
- BEST BRANDS IN ONE BOX
- RETURNS ARE ACCEPTED ONLY IN THEIR ORIGINAL PACKAGING UNOPENED PACKAGING
- Free Torque Converter
- 2 Yr Warranty
- 30Yrs In Business
- Worldwide Shipping
- DOC'S DIESEL - Doc's Diesel Transmission Filters are made to keep your rig shifting smoothly and running right. They trap dirt and debris that can wreck key parts like the torque converter and fluid pump. A clean transmission filter means less heat, less wear, fewer costly repairs, and puts less strain on your engine, which means better fuel mileage.
- FITMENT - Compatible with Ram 6.7L Cummins 2500, 3500 with 68RFE Transmission 4WD 2007.5-2024
- INTERCHANGE - Replaces Mopar 5013470AC, Replaces Wix WL10394, Replaces Premium Guard PT1271
- REPLACEMENT GUIDELINES - Above all recommendations, change according to your vehicle’s manufacturer's warranty. Transmission Filters should be changed every 25,000-50,000 miles or 60,000 miles maximum.
- DOC’S DIESEL FILTERS - Doc’s is the new standard in aftermarket replacement filters, setting benchmarks for quality and reliability in the industry! Based in Northwest Ohio, our premium line includes engine air, cabin air, oil, and fuel filters, all engineered to meet or exceed OEM standards. We're a grassroots company dedicated to delivering exceptional value and unmatched commitment to our customers. Choose Doc's for superior performance, durability, and peace of mind for your vehicle.
The Ultimate Buying Guide: Choosing a 68RFE Torque Converter
The 68RFE transmission powers many Dodge and Ram trucks. It is a strong transmission, but the factory torque converter often fails under pressure. Upgrading your torque converter improves power delivery and keeps your transmission safe. Use this guide to find the best match for your truck.
1. Key Features to Look For
- Stall Speed: This determines when your engine transfers power to the wheels. A lower stall speed is better for heavy towing.
- Clutch Surface Area: A larger clutch surface prevents slippage. This is vital for modified trucks with extra horsepower.
- Billet Covers: A billet steel cover stops the converter from ballooning under high pressure.
- Multi-Disc Design: Multi-disc clutches handle much more heat and torque than single-disc factory versions.
2. Important Materials
Quality matters inside your transmission. Look for converters made from high-strength billet steel. This material withstands extreme heat without warping. The internal clutch linings should use high-friction carbon fiber materials. These materials grip harder and resist burning during heavy loads.
3. Factors That Improve or Reduce Quality
Precision manufacturing improves quality. Top-tier builders use computer balancing to prevent vibrations. They also use furnace-brazed fins to stop the internal components from breaking. Poor quality often comes from recycled factory parts. Avoid “stock-plus” converters if you plan to add performance tuners to your truck.
4. User Experience and Use Cases
If you use your truck for daily driving, a mild street-performance converter works best. It keeps the truck feeling snappy without being too harsh. If you tow heavy trailers, choose a heavy-duty converter with a low stall speed. This prevents the transmission from overheating on long climbs. Off-road enthusiasts should look for billet internals to handle the shock of uneven terrain.
10 Frequently Asked Questions
Q: Do I need a new flexplate when I upgrade my converter?
A: Yes, it is highly recommended. A new, high-strength flexplate prevents cracks caused by the added torque of your new converter.
Q: Will a performance converter hurt my fuel economy?
A: Not usually. A better converter helps your engine transfer power more efficiently, which can sometimes even improve your mileage.
Q: What is “ballooning”?
A: Ballooning happens when internal fluid pressure forces the converter shell to expand. This ruins the internal seals and causes transmission failure.
Q: Is a billet cover necessary for a stock truck?
A: It is not required for a stock truck, but it provides great peace of mind and increases the lifespan of your transmission.
Q: How does stall speed affect towing?
A: A high stall speed makes the truck feel “mushy” when towing. Stick to a low or factory-spec stall speed for the best towing performance.
Q: Should I change my transmission fluid during the install?
A: Yes. Always use fresh, high-quality transmission fluid when installing a new converter to ensure a clean start.
Q: How long does a performance converter last?
A: With proper maintenance and fluid changes, a quality aftermarket converter can last as long as the transmission itself.
Q: Can I install this myself?
A: You can, but it is a difficult job. It requires removing the transmission. If you lack experience, let a professional shop handle the installation.
Q: What is a triple-disc converter?
A: It uses three friction discs instead of one. This provides three times the holding power, making it perfect for tuned or heavy-duty trucks.
Q: Will this fix my transmission shudder?
A: Often, yes. Shudder is usually caused by a slipping torque converter clutch. Replacing it with a high-quality unit usually solves the problem.