Description
Mishimoto 03-09 Dodge Ram 5.9L/6.7L Cummins Transmission Cooler
Heat is the arch-nemesis of your transmission, and when it comes to rugged performance vehicles like the 2003-2009 Dodge Ram 5.9L / 6.7L Cummins, maintaining optimal temperatures is critical. Whether you’re towing heavy loads, managing a fleet, or simply navigating daily commutes, the Mishimoto Transmission Cooler is your solution for keeping your transmission running cool and efficient.
Key Features:
- Stacked Plate Core Design: Provides durable and powerful cooling capabilities.
- Massive Core Volume: Experience a significant 212% increase in core volume compared to stock coolers.
- Enhanced Fluid Capacity: Enjoy a remarkable 244% increase in fluid capacity for superior cooling performance.
- Serviceable Thermostat: Avoid the hassle of replacing the entire cooler if the thermostat fails; our design allows for easy servicing.
- Quick Access Port: Facilitate quick and simple thermostat access for maintenance in just a few minutes.
- Bypass Options: Adapt to your environment with the ability to bypass the thermostat using a stainless-steel bypass plug in hotter climates.
- CNC-Machined Stainless Steel Fittings: Prevent seized fittings with our easy-to-install hose barb fittings.
- Lifetime Warranty: Like all Mishimoto products, this cooler is backed by a lifetime warranty for your peace of mind.
Benefits:
With the Mishimoto Transmission Cooler, your Dodge Ram will benefit from:
- Improved transmission longevity through effective heat dissipation.
- Enhanced towing capacity and performance reliability.
- Convenient maintenance options that save time and resources.
- Versatile use for varying climates, ensuring optimal operation year-round.
Use Cases:
This transmission cooler is ideal for:
- Heavy-duty towing applications.
- Commercial fleet vehicles requiring consistent performance.
- Everyday drivers looking to boost their vehicle’s reliability.
Upgrade your 2003-2009 Dodge Ram 5.9L / 6.7L Cummins with the Mishimoto Transmission Cooler and experience the difference that effective cooling can make!






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