
- Direct-Fit: Engineered to match the factory specifications for a seamless installation.
- Meets OE Specs: Guarantees a level of quality and performance that aligns with original equipment.
- Maintains Factory Function: Ensures your engine's oil is properly cooled, preventing overheating and potential damage.

Restore the critical cooling function of your 2003-2007 Dodge Ram 2500/3500 5.9L Cummins with the Interstate-McBee M-3959031 Engine Oil Cooler. A leaking or failed oil cooler can lead to serious engine damage by allowing vital fluids to mix. This direct-fit replacement is engineered to meet or exceed OEM specifications, ensuring it fits perfectly and functions just like the original part. By choosing this high-quality oil cooler, you're not just fixing a leak; you're safeguarding your engine from overheating and maintaining its long-term health and performance.
Direct-Fit: Engineered to match the factory specifications for a seamless installation.
Meets OE Specs: Guarantees a level of quality and performance that aligns with original equipment.
Maintains Factory Function: Ensures your engine's oil is properly cooled, preventing overheating and potential damage.
This oil cooler is designed to fit a wide range of 5.9L Cummins engines from 2003-2007. We recommend you verify the fitment for your specific year and model to ensure you get the right part for your truck. By investing in the Interstate-McBee M-3959031, you can dr[...]
- Direct-Fit: Engineered to match the factory specifications for a seamless installation.
- Meets OE Specs: Guarantees a level of quality and performance that aligns with original equipment.
- Maintains Factory Function: Ensures your engine's oil is properly cooled, preventing overheating and potential damage.