SKU: MMTC-RAM-03TQ | UPC: 840197710593
Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Transmission Cooler
The Mishimoto Replacement Transmission Oil Cooler serves as a direct-fit OEM part for 2003-2007 Dodge Ram models with 5.9L Cummins diesel engines including Ram 1500, 2500, and 3500. Factory liquid-to-liquid coolers use engine coolant to manage transmission fluid temperature but risk leaking coolant into the fluid when they fail leading to transmission damage. This replacement cooler matches OEM specs to maintain proper cooling and prevent costly repairs.
Key Features
- Direct-Fit Design: Bolts in place of factory unit with no cutting drilling or modifications needed for seamless installation.
- OEM Specifications: Built to exact factory dimensions and performance standards for reliable operation in all conditions.
- Coolant Leak Prevention: Eliminates risk of coolant mixing with transmission fluid protecting against premature transmission failure.
- Heavy-Duty Construction: Aluminum construction resists corrosion and withstands high-pressure diesel demands.
- Lifetime Warranty: Mishimoto backs every cooler with lifetime coverage for long-term confidence.
Product Notes
- Install preventatively on high-mileage trucks to avoid transmission rebuild costs.
- Inspect factory cooler for leaks before replacement.
- Ships securely packaged in 21 x 14 x 7 inch box weighing 5.5 lbs total.
Installation Notes
- Professional installation recommended.
- Direct bolt-on using factory mounting points and hardware.
- Compatible with stock transmission lines and engine cooling system.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003 | Dodge | Ram 1500 | Laramie |
| 2003 | Dodge | Ram 1500 | SLT |
| 2003 | Dodge | Ram 1500 | ST |
| 2003,2005-2007 | Dodge | Ram 2500 | Laramie |
| 2003-2007 | Dodge | Ram 2500 | SLT |
| 2006-2007 | Dodge | Ram 2500 | Sport |
| 2003-2007 | Dodge | Ram 2500 | ST |
| 2006-2007 | Dodge | Ram 2500 | TRX4 |
| 2003-2007 | Dodge | Ram 3500 | Laramie |
| 2003-2007 | Dodge | Ram 3500 | SLT |
| 2006-2007 | Dodge | Ram 3500 | Sport |
| 2003-2007 | Dodge | Ram 3500 | ST |
| 2007 | Dodge | Ram 3500 | TRX4 |
Why Choose Mishimoto?
- Proven reliability in Cummins diesel applications worldwide.
- Engineered for exact fit and sustained performance under heavy loads.
- Lifetime warranty covers defects and workmanship indefinitely.
Frequently Asked Questions
- Q: Will this fit my 2005 Dodge Ram 2500 5.9L Cummins SLT?
A: Yes it fits 2003-2007 Ram 2500 SLT models with 5.9L Cummins as a direct OEM replacement. - Q: What material is the cooler made from?
A: High-quality aluminum tubing and fins matching OEM construction for durability and heat transfer. - Q: What does the lifetime warranty cover?
A: Covers manufacturing defects material failures and workmanship for the original purchaser with no time limit.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-protected box 21 x 14 x 7 inches
- Weight: 4.85 lbs net 5.5 lbs shipping
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