Mishimoto 03-09 Dodge Ram 5.9L/6.7L Cummins Transmission Cooler
Mishimoto 03-09 Dodge Ram 5.9L/6.7L Cummins Transmission Cooler
Available in stock (62)
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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Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

