2002-2004 Chevrolet Duramax Mishimoto Intercooler Kit MMINT-DMAX-02KSL Performance 6.6L

Boost Your Diesel Performance with the Mishimoto Intercooler Kit for Duramax

If you’re driving a Duramax-powered Silverado or Sierra, you already know that torque and reliability are the name of the game. But when towing heavy loads, climbing steep grades, or turning up the boost, heat becomes your biggest enemy. That’s where the Mishimoto Intercooler Kit for Duramax comes in — engineered to deliver cooler intake temps, improved airflow, and maximum performance for your turbo diesel.

Why Your Duramax Needs an Intercooler Upgrade

Stock intercoolers are fine for factory power levels, but once you add a tune, intake, or exhaust upgrades, they struggle to keep up. Excessive heat leads to power loss, higher EGTs (exhaust gas temps), and reduced engine life.

The Mishimoto Duramax Intercooler Kit solves these issues with increased cooling capacity and a bar-and-plate core designed for extreme durability. Whether you’re towing, racing, or daily driving, this upgrade ensures consistent power and reliability.

Performance Benefits:

• ❄️ Reduces intake air temperatures (IATs) by up to 30%

• ⚙️ Improves turbo efficiency and throttle response

• 💪 Handles high boost levels and heavy towing loads

• 🔥 Lowers EGTs for better engine protection

Fed up with high EGTs and an intercooler setup that isn’t keeping up with the demands of your Duramax? The solution is finally here with the Mishimoto Chevrolet/GMC 6.6L Duramax intercooler kit! This kit includes everything you need to improve airflow, substantially decrease air-charge temperatures, and support your truck at any power level.The first key component is the Mishimoto intercooler piping.Our engineers have maximized airflow by eliminating restrictive bends, resulting in a smooth and unimpeded airflow.The piping is constructed of mandrel bent aluminum polished to a flawless finish.For efficient holding power this kit includes Mishimoto silicone boots with DuraCore technology and constant-tension T-bolt clamps.Mishimoto DuraCore technology is the synthetic material that comprises the innermost layer of all Mishimoto silicone diesel boots.Compared to normal silicone, DuraCore provides superior resistance to heat, pressure, fuel, and oil.This effectively increases the life of our boots by preventing leaks and blowouts.This package is rounded out with the Mishimoto intercooler featuring cast aluminum end tanks and a bar-and-plate core, all designed to allow for cool, dense air to your engine.The Mishimoto Duramax intercooler features greater core volume than the factory cooler; this provides reduced air-charge temperatures and EGTs.All the components in this kit are engineered to last, just like your truck.Offered with either a black or silver core, the Mishimoto 6.6L Duramax intercooler kit is protected by our signature lifetime warranty.

Compatible with the 2002–2004.5 Chevrolet/GMC 6.6L
Overall Size: 45.6” x 23.4” x 8.2” / Core Size: 38.27” x 18.86”
Construction: Bar/Plate Inlet/Outlet: 3.0” Core Thickness: 2.05”
Mandrel-bent aluminum polished pipes eliminate restrictive bends
Mishimoto Lifetime Warranty