Mishimoto
Mishimoto 03-09 Dodge Ram 5.9L/6.7L Cummins Transmission Cooler - #MMTC-RAM-03SL
Mishimoto 03-09 Dodge Ram 5.9L/6.7L Cummins Transmission Cooler - #MMTC-RAM-03SL
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There's no greater enemy for a transmission than heat. Whether your 2003-2009 Dodge Ram 5.9L / 6.7L Cummins is a dedicated tow vehicle, hardworking fleet truck, or a daily driver, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that. Our 2003-2009 Dodge Ram 5.9L / 6.7L Cummins transmission cooler utilizes a stacked plate core for durable and powerful cooling. With a massive 212-percent greater core volume, 244-percent increase in fluid capacity, this trans cooler is a huge improvement over stock 2003-2009 Dodge Ram 5.9L / 6.7L Cummins transmission cooler. The Mishimoto transmission cooler is not only larger than the stock cooler, but more reliable too. When the stock cooler's thermostat fails, it fails closed, bypassing the cooler and returning hot fluid to the transmission. Mishimoto has solved this common issue by making the thermostat in our 2003-2009 Dodge Ram Cummins transmission cooler fully service
Vehicle Fitment
- 2003-2009 Dodge Ram 2500
- 2003-2009 Dodge Ram 3500
⚠ WARNING (California Prop 65): This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Image is for reference only; actual product may vary by application.
Manufacturer Part Number: MMTC-RAM-03SL
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Manufacturer's Warranty — Mishimoto
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Manufacturer's Warranty — Mishimoto
Mishimoto products carry a Limited Lifetime Warranty to the original purchaser, including an Accident Protection Plan. Non-transferable; original sales receipt required. Excludes improper installation and misuse.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Mishimoto. Contact us if you need help with a warranty claim.

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