Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Transmission Cooler Exhaust- Mufflers & Tips>Catalytic Converter Direct Fit 67% greater flow area compared

67% greater flow area compared to stock

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6L L5P Duramax is a dedicated tow vehicle

The AWE Track Edition comes standard with Diamond Black 180mm RS-style oval tips

Locking Ties 1 - Locking Tie Tool NOTE Wrapping of the catalytic converter is not recommended

Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Transmission Cooler Exhaust- Mufflers & Tips>Catalytic Converter Direct Fit 67% greater flow area comparedThe 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