The factory transmission oil cooler on your 2003-2007 Dodge Ram 5.9L Cummins is a liquid-to-liquid cooling unit, utilizing the engine's cooling system to cool the transmission fluid during warm outside temperatures and warm the fluid during cold outside temperatures. This design is tried and true, and it works. Until it doesn't. When they wear out and fail, it can leak coolant into your transmission fluid. Mixing coolant into your transmission fluid can have catastrophic results, and nobody wants to spend thousands of dollars to rebuild or replace their transmission if it can be avoided. The Mishimoto Replacement Transmission Oil Cooler is a direct fit, OEM replacement that requires no modification to install. Made to OEM specifications, this transmission oil cooler is equivalent to an OEM part. By replacing your transmission cooler preventatively, you can save your transmission from falling victim to premature failure. As with all of our products, this cooler is backed by our signature Mishimoto Lifetime Warranty.
Automatic transmission oil cooler designed to regulate fluid temperature and prevent overheating. Enhances transmission longevity, maintains performance, and features durable construction with a precise fit.
Includes new powdercoated bracket and brass fittings for easy installation
Equivalent to OEM specifications for fit and function
Durable, corrosion-resistant aluminum construction
The Mishimoto Replacement Transmission Oil Cooler for 2003-2007 Dodge Ram 5.9L Cummins engines offers a reliable, OEM-grade solution to maintain your vehicle's transmission health. This liquid-to-liquid cooling unit utilizes the engine's cooling system to help regulate transmission fluid temperature, preventing overheating and prolonging transmission life. Designed to fit seamlessly without modifications, it is a direct replacement that restores optimal cooling performance and helps avoid costly repairs caused by coolant leaks or transmission failure. Constructed from durable, corrosion-resistant aluminum, this cooler withstands harsh engine environments and maintains its structural integrity over time. The included powder-coated bracket and brass fittings simplify installation, ensuring a secure fit and a clean appearance. This cooler's design aligns with OEM specifications, ensuring compatibility and performance, and it is backed by Mishimoto’s lifetime warranty for added confidence.
Features:
Includes a powder-coated bracket and brass fittings for straightforward installation
Constructed from durable, corrosion-resistant aluminum for long-lasting performance
OEM-equivalent design ensures perfect fit and functionality
Liquid-to-liquid cooling process helps regulate transmission fluid temperature effectively
Prevents coolant mixing into transmission fluid, avoiding catastrophic damage
Designed specifically for 2003-2007 Dodge Ram 1500, 2500, and 3500 models equipped with 5.9L Cummins engines
Backed by Mishimoto’s lifetime warranty for peace of mind
