Product Description
The REVMAX 478-936 Overdrive Sprag is a critical internal upgrade for 46RH, 47RH, 47RE, and 48RE transmissions found in 1994–2007 Dodge Ram 5.9L Cummins trucks.
Overdrive sprag failure is a common weak point in high-torque diesel applications. Whether you're rebuilding a stock unit or building a performance transmission, upgrading this component helps improve reliability, torque capacity, and long-term durability.
Why Upgrade the Overdrive Sprag?
- Addresses a known weak point in overdrive sections
- Improves durability under heavy towing and performance tuning
- Ideal for performance builds and heavy-duty rebuilds
- Designed for high-torque Cummins applications
Recommended For:
- Complete transmission rebuilds
- Performance transmission builds
- Heavy towing applications
- Trucks running upgraded injectors, tuning, or larger turbos
Fitment:
- 1994–1995 Dodge Ram 2500/3500 – 5.9L Cummins – 46RH
- 1994–1995 Dodge Ram 2500/3500 – 5.9L Cummins – 47RH
- 1996–2002 Dodge Ram 2500/3500 – 5.9L Cummins – 47RE
- 2003–2007 Dodge Ram 2500/3500 – 5.9L Cummins – 48RE
| Specifications for REVMAX 478-936 | |
|---|---|
| UPC | Verify with manufacturer or supplier at time of listing |
| GTIN | Verify with manufacturer or supplier at time of listing |
| Shipping Info | Estimated Shipping Weight: 3–5 lb Ships via UPS / FedEx Ground |
| Prop 65 | WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov |
FAQ
What does the overdrive sprag do?The overdrive sprag is a one-way clutch inside the overdrive section of the transmission. It allows rotation in one direction and locks in the other, which is critical for proper overdrive function.
Is this recommended for stock trucks?
Yes. Even stock trucks benefit from replacing worn sprags during a rebuild. It becomes even more important for tuned, towing, or performance applications.
Will this fit both gas and diesel applications?
This part is primarily targeted toward 5.9L Cummins diesel applications, but may fit other compatible 46RH/47RH/47RE/48RE units. Always verify your transmission model before ordering.
Should this be installed by a professional?
Yes. Internal transmission components require proper tools, measurements, and experience to ensure correct installation and long-term reliability.
