Mishimoto Chevrolet/GMC 6.6L Duramax Intercooler Kit, 2002-2004.5 View larger

Mishimoto Chevrolet/GMC 6.6L Duramax Intercooler Kit, 2002-2004.5

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Mishimoto Chevrolet/GMC 6.6L Duramax Intercooler Kit, 2002-2004.5

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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.

Mishimoto, the world leader in performance cooling products, is proud to introduce you to the Mishimoto Performance Intercooler & Piping Kit for the 2001-2005 Chevrolet Si...

45.6” x 23.4” x 8.2”

38.27" x 18.86"

3.00” (76mm)

3.00” (76mm)



Boot 1: 2.30”, 3.00”
Boot 2: 2.30”, 3.00”
Boot 3: 3.00”
Boot 4: 3.00”

(2) 2.75” Constant Tension T-Bolt Clamps
(6) 3.25” Constant Tension T-Bolt Clamps
Polished Aluminum


2002-2004.5 Chevrolet Silverado 2500 HD w/ 6.6L Duramax LB7/LLY
2002-2004.5 Chevrolet Silverado 3500 HD w/ 6.6L Duramax LB7/LLY
2002-2004.5 GMC Sierra 2500 HD w/ 6.6L Duramax LB7/LLY
2002-2004.5 GMC Sierra 3500 HD w/ 6.6L Duramax LB7/LLY

Mishimoto Intercooler
(2) Aluminum Intercooler Pipes
(4) Silicone Boots with DuraCore™ Technology
(8) Constant Tension T-Bolt Clamps
(2) Aluminum Mishimoto M Logo Badges
Limited Lifetime Warranty

Mishimoto Performance (MP), warrants all of its products under its 'no questions asked' limited lifetime warranty policy. Regardless of the defect in product, Mishimoto will replace the original product. Warranty claims must be accompanied by the original sales receipt from an authorized dealer. 

A trained professional should install all MP products. Any issues with compatibility or installation should be addressed before attempting to install the product. 

The purchaser's remedy for breach of this limited warranty, exclusive of all other remedies provided by law, is expressly limited to repair or replacement of any part or parts. All products returned for warranty consideration must be returned to MP with all transportation expenses prepaid.

MP shall not be responsible for damages to its products or injury to persons using the products in any manner that would constitute improper operation, including but not limited to: incorrect opening of radiator pressure caps, burst hoses, unintended application or usage not intended by MP, negligence, improper installation, or any other use that may cause damages or injury. MP shall not be responsible for injury or harm to persons or property when caused by persons or vehicles using its products. 


Mishimoto, under its no questions asked warranty policy, will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident. 


All Mishimoto products are engineered to fit with OEM applications, as well as other Mishimoto products.

Mishimoto will not be held responsible for fitment issues caused by attempted installation of additional aftermarket parts. This includes, but is not limited to, performance parts and any other non-OEM replacement parts. Fitment with different brands cannot be guaranteed.

Furthermore, Mishimoto will not be held responsible for fitment issues caused by an accident. Many times, clearances needed for installation are very strict. If a vehicle has been involved in a front-end accident, available space for a product such as a thicker aluminum radiator may be compromised.