Mishimoto Intercooler

2003–2009 Dodge Ram 2500 / 3500 5.9L & 6.7L Diesel, 2008–2009 Ram 1500 6.7L Diesel

Part #: MMINT-RAM-03BK

Overview

The Mishimoto Intercooler is a precision-engineered performance upgrade tailored for Dodge Ram 2500 and 3500 trucks from 2003 to 2009 equipped with the 5.9L and 6.7L Cummins diesel engines, as well as the 2008–2009 Ram 1500 6.7L diesel models. Designed to optimize intake air cooling and airflow efficiency, this intercooler significantly reduces intake air temperatures and pressure loss, which translates into improved power delivery and enhanced engine reliability.

Ideal for both stock and modified trucks, the Mishimoto intercooler supports higher boost levels while lowering exhaust gas temperatures (EGTs), helping to protect your engine under demanding conditions. Whether you tow heavy loads, navigate off-road terrain, or seek consistent daily performance, this intercooler delivers dependable cooling and durability to match the rugged nature of your Cummins diesel.

Key Features

Engineered with advanced materials and design, the Mishimoto intercooler offers superior cooling and airflow improvements over factory units:

• Robust cast aluminum end tanks provide exceptional strength and resistance to boost pressure
• Dense bar-and-plate core design maximizes heat dissipation and airflow efficiency
• Increased core volume supports higher boost pressures and reduces exhaust gas temperatures
• Larger outlet ports improve airflow and reduce pressure drop for enhanced throttle response
• Includes two silicone boots featuring Mishimoto’s proprietary DuraCore technology for superior heat, pressure, fuel, and oil resistance
• Signature constant-tension T-bolt clamps ensure secure, leak-free connections
• Finished in sleek black for a clean, aggressive appearance
• Backed by Mishimoto’s lifetime warranty for long-term peace of mind

Construction & Design

The Mishimoto intercooler is built to withstand the rigors of high-performance diesel applications. Its cast aluminum end tanks offer enhanced durability and strength, capable of handling elevated boost pressures without deformation. The bar-and-plate core is densely packed to maximize surface area, promoting efficient heat transfer and cooler intake air temperatures, which improves combustion efficiency and engine longevity.

Larger outlet ports compared to stock intercoolers facilitate smoother airflow, reducing pressure loss and improving throttle response. The included silicone boots utilize Mishimoto’s DuraCore technology, which features a synthetic inner layer that resists degradation from heat, pressure, fuel, and oil exposure, ensuring a longer service life and preventing leaks or blowouts under extreme conditions.

Installation & Fitment

This intercooler is a direct-fit replacement designed specifically for 2003–2009 Dodge Ram 2500 and 3500 trucks with 5.9L and 6.7L Cummins engines, as well as 2008–2009 Ram 1500 6.7L diesel models. Installation requires no major modifications and can be completed with basic hand tools. The kit includes all necessary silicone boots and clamps, making the upgrade process straightforward and hassle-free.

Whether upgrading a stock setup or enhancing a modified turbo system, the Mishimoto intercooler integrates seamlessly with existing intake piping and turbo components, maintaining factory fitment and reliability.

What's Included

• Mishimoto cast aluminum intercooler core with end tanks
• Two silicone boots with DuraCore technology
• Two constant-tension T-bolt clamps
• Installation hardware and detailed instructions

Ideal For

This intercooler is perfect for Dodge and Ram owners looking to improve their Cummins diesel engine’s cooling efficiency and overall performance. It suits daily drivers seeking reliable power gains, towing enthusiasts who demand consistent engine temperatures under load, and off-roaders requiring durable components. Additionally, it supports modified trucks running higher boost levels by maintaining lower intake temperatures and protecting critical engine components during increased stress.

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.