Mishimoto MMTC-RAM-03TQ Replacement Transmission Oil Cooler, Compatible with Dodge Ram Cummins 5.9L, 2003-2007

Upgrade your transmission cooling system with the Mishimoto Replacement Transmission Oil Cooler compatible with Dodge Ram 2500 & 3500 equipped with the 5.9L Cummins engine from 2003 through 2007. Intended to use with factory mounting locations and hardware, this direct fit transmission cooler installs easily without modification.Designed to match OEM quality, this Mishimoto cooler delivers improved thermal control to help reduce transmission fluid operating temperatures under towing, heavy loads, or challenging climates. This added cooling capacity supports smoother shifts and enhanced transmission longevity—trends in high duty applications increasingly demand more robust heat rejection systems.Built with durability in mind, the cooler features a corrosion resistant aluminum construction, brass fittings, and powder coated mounting bracket. Precision engineering ensures OEM level fit, while materials are chosen to resist wear and environmental exposure for long service life.Installation is straightforward, no cutting or trimming required, and the unit meets factory specifications for seamless integration. Replaces failing stock coolers, restoring reliable thermal control and peace of mind. Preventative cooling upgrades are increasingly valued in towing, heavy haul, and diesel performance builds.Every product is crafted with precision and supported by Mishimoto’s engineering standards and customer care. Expect dependable temperature management and a performance minded solution you can trust.

• Compatibility: Direct fit design compatible with Dodge Ram Cummins 5.9L, 2003-2007, transmissions for OEM style plug and play installation
• Enhanced Performance: Brazed aluminum cooler reduces transmission fluid temps under heavy load or towing to prolong gearbox life and maintain shift quality
• Durable Construction: Engineered from corrosion resistant aluminum with powder coated bracket and brass fittings for long term reliability
• Easy Installation: Includes powder coated bracket and fittings for simple swap on stock system; engineered to meet OEM specs for fit and function, no modifications necessary
• Peace of Mind: Constructed with high-performance materials and backed by Mishimoto's high standards for durability and quality