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USD 896.95

Mishimoto MMRAD-DMAX-01 Aluminum Performance Radiator

Vehicle Fitment:
2001-2005 GM 6.6L Duramax LB7/LLY | See full application list below
★★★★★ ★★★★★ 4 Reviews
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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.

Vehicle Fitment

2001 Chevrolet Silverado 2500 HD
2001 Chevrolet Silverado 3500
2001 GMC Sierra 2500 HD
2001 GMC Sierra 3500
2002 Chevrolet Silverado 2500 HD
2002 Chevrolet Silverado 3500
2002 GMC Sierra 2500 HD
2002 GMC Sierra 3500
2003 Chevrolet Silverado 2500 HD
2003 Chevrolet Silverado 3500
2003 GMC Sierra 2500 HD
2003 GMC Sierra 3500
2004 Chevrolet Silverado 2500 HD
2004 Chevrolet Silverado 3500
2004 GMC Sierra 2500 HD
2004 GMC Sierra 3500
2005 Chevrolet Silverado 2500 HD
2005 Chevrolet Silverado 3500
2005 GMC Sierra 2500 HD
2005 GMC Sierra 3500


  • MFG. Number MMRAD-DMAX-01
  • Manufacturer Name Mishimoto
  • Shipping Weight 15.00 lb.
  • Shipping Length 7 in.
  • Shipping Width 33 in.
  • Shipping Height 37 in.
  • Fuel Type Diesel
  • UPC 748666005006
  • Warranty Info Limited Lifetime
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Internal L0R1


★★★★★ ★★★★★
2.2/5 Stars out of 4 Reviews
Mishimoto radiator
Wouldn’t buy one the first one lasted 2year started leaking where the core and tank come together. They warranted it for $100 freight charge that one did the same thing 6 months later they are junk!!!!!
Bought this radiator 9/19/2017 and it has done great until just here recently when I noticed a leak. Pressure test showed the radiator leaking where the core meets the end caps on both sides on the fan side. 62,000 miles or 2.5 years is pretty disappointing. The factory radiator with plastic end caps lasted longer. Currently awaiting Mishimoto's warranty response.
Mishimoto Performance Radiator and Intercooler
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.
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