Product Description
The TransGo TFOD-SP Heavy Duty Overdrive Direct Spring is a proven upgrade designed to improve clutch holding power and durability in Dodge A518, 46RH, 46RE, A618, 47RH, 47RE, and 48RE transmissions. This performance-enhancing component increases apply pressure on the overdrive direct clutch pack, helping prevent slippage and premature wear under heavy load or high horsepower conditions.
WHY INSTALL THE TRANSGO TFOD-SP SPRING?
- Increases overdrive clutch holding capacity
- Reduces clutch slippage under load and high torque
- Improves transmission longevity and reliability
- Ideal for towing, performance builds, and upgraded power levels
- Helps prevent premature overdrive clutch failure
- Simple yet highly effective internal upgrade
FITMENT
- 1988–1995 Dodge Ram – A518 / 46RH Transmission
- 1996–2002 Dodge Ram – 46RE Transmission
- 1994–2002 Dodge Ram – 47RH / 47RE Transmission
- 2003–2007 Dodge Ram – 48RE Transmission
- Fits Cummins-equipped and gas applications using listed transmissions
WHAT THIS UPGRADE DOES
Factory overdrive direct springs can weaken over time, especially in trucks used for towing or performance applications. The TransGo TFOD-SP spring increases the clamping force on the clutch pack, ensuring positive engagement, reduced heat buildup, and improved power transfer. This upgrade is critical for maintaining transmission integrity in higher stress environments.
SPECIFICATIONS FOR TRANSGO TFOD-SP
| Specification | Details |
|---|---|
| Part Number | TFOD-SP |
| UPC | 810159322874 |
| GTIN | 810159322874 |
| Shipping | Calculated at checkout |
| Application | Overdrive Direct Clutch Spring Upgrade |
| Prop 65 | Yes – www.P65Warnings.ca.gov |
FAQ
What does the TFOD-SP spring improve?
It increases the holding capacity of the overdrive direct clutch pack, preventing slippage and improving durability.
Is this recommended for stock trucks?
Yes. Even stock trucks benefit, especially if used for towing or heavy-duty driving conditions.
Do I need a full rebuild to install this?
Yes, this component is installed internally and typically requires transmission disassembly or rebuild.
Will this help with overdrive slipping?
Yes, increasing clutch apply pressure helps eliminate slipping in overdrive gears.
Is this a performance upgrade?
Absolutely. It’s a critical upgrade for higher horsepower builds and towing applications where extra holding strength is needed.
