Mishimoto MMRAD-DMAX-01 Aluminum Performance Radiator

2001-2005 GM 6.6L Duramax LB7/LLY
Mfg. Number:
XDP Part Number:
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Mishimoto has released a performance aluminum radiator for the 2001-2005 Chevrolet/GMC 6.6L Duramax. Mishimoto performance radiators are manufactured from high-quality aircraft-grade aluminum with a 100% aluminum core and polished end tanks. The Mishimoto 6.6L Duramax performance radiator offers increased cooling efficiency, and the all-aluminum TIG-welded construction provides a rugged design that can take the abuse of any environment or terrain. Pair your Mishimoto 6.6L Duramax aluminum radiator with our silicone coolant hose kit for the ultimate in cooling performance and reliability. As with all our products, this radiator is protected by the Mishimoto lifetime warranty.

  • Direct OEM Replacement
  • No Cutting or Modification Required

Technical Specifications:

  • Overall Size: 45.6” x 20.8” x 5.4”
  • Core Size: 34.06" x 19.61"
  • Rows: 2
  • Inlet: 1.89”
  • Outlet: 1.89”
  • Core Thickness: 2.20”"
  • Tank Wall Thickness: .08”
  • Drain Plug Thread Size: M12 x 1.5   

Kit Includes:
Mishimoto Radiator
Magnetic Drain Plug
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.

Accident Protection
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.

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(13 Ratings, 2 Reviews) Average Rating:
Mishimoto radiator
Sam (OC) 9/5/2015 10:42 AM
Horrible product 1st one I recieved was damaged. It could have been shipping after couple weeks of sending pics on the phone ect finally got a new one. It lasted about 6 months before it started to leak from where core meets the ends. Buyer beware lot of money for only last 6 months!
Mishimoto Performance Radiator and Intercooler
E.J. Rogers (California Hot Springs, CA) 5/15/2015 10:38 AM
I live up in the mountains and drive the same route from LA area over the "Grapevine" once a month. I recently installed the Mishimoto Radiator on my 03 Chev Silverado 3500 with Duramax LB7 cooled by Flexalite electric Monster cooling fans.No clutch driven fan.Going up the grade the coolant temp went from the past normal of 225 degrees down to 205 degrees. What a difference. Also I installed the Mishimoto radiator without removing the Intercooler. Easy one person job. I also have the Mishimoto Intercooler. They are a great pair.