Oil is the lifeblood of an engine, and in a hardworking diesel engine like the 2003-2007 Dodge RAM 5.9L Cummins, keeping that oil cool is essential to the engine's health. ---- A clogged or leaking oil cooler can reduce the oil's ability to transfer heat to the coolant, causing thinning and a loss of protection for critical engine components. Mishimoto proudly offers a stock-style replacement oil cooler with new seals. This replacement cooler will restore and improve your engine's oil cooling capabilities and protect it from unnecessary wear. ---- This cooler is a direct fit and provides all the cooling a daily driven 5.9L Cummins needs at an affordable price point.
Features
- Includes all gaskets to fit your specific model for a compatible installation
- Replaces clogged or leaking stock oil cooler for renewed reliability
- Meets OEM quality standards to restore daily driving performance
Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Oil Cooler
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model |
|---|---|---|
| 2003–2007 | Dodge | Ram 2500 |
| 2003–2007 | Dodge | Ram 3500 |
- Engine: 5.9L Cummins
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Mishimoto |
| Part number | MISMMOC-RAM-03 |
| Category | Cooling |

Worth adding
Useful in any truck — ships separately in its own box.
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