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USD 429.95
Part #: XD297

XDP X-TRA Cool Direct-Fit Replacement Radiator XD297

2006-2010 GM 6.6L Duramax LBZ/LMM
Part #: XD297
★★★★★ ★★★★★ 12 Reviews
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Use the XDP X-TRA Cool Direct-Fit Replacement Radiator XD297 to upgrade the failed radiator in your 2006-2010 GM 6.6L Duramax LBZ & LMM. The X-TRA Cool Radiators are built for increased durability over your factory radiator. Using construction techniques borrowed from the HD and semi-truck industry, X-TRA Cool Radiators give you a long-lasting direct-fit upgrade to protect your engine and cooling system. 

High-Efficiency Core Design
With more fins per inch, and heavy duty tubes to increase cooling efficiency, the upgraded core design allows you to maximize cooling potential of your Duramax.

Internally Reinforced
Using a special aluminum brazing technique, the X-TRA Cool Radiators are built for increased strength. The internally reinforced end tubes and outside corners provide more strength where the core is most vulnerable. 

Gasket Design
A common failure point in many OE radiators, X-TRA Cool Radiators use a proprietary gasket that allows for contraction, expansion, and front-end movement. 

Revised End Tanks
Using a fiber reinforced plastic mix adds strength to the end tanks. Reinforcement ribs are added to the weak points to help eliminate end tank failures.

Upgraded Mounting Points
The integrated mounting points have been updated for added strength. This allows for the radiator to be securely mounted in the factory locations. 

End Tank/Core Assembly
X-TRA Cool Radiators use a heavy gauge steel crimp strip to mate the core to the end tanks. Instead of using aluminum like the factory radiator, the heavy gauge steel helps to eliminate the common failures of tank and core separation. 

  • Direct-Fit 
  • Upgraded Design For Increased Durability
  • High-Efficiency Core To Maximize Cooling 
XD297 Specifications:
Row Quantity: 2
Core Width: 33-7/8" 
Core Height: 23-1/4" 
Core Thickness: 2-1/4"
Inlet Connection: 1-3/4"
Outlet Connection: 2" (Quick Connect)
Trans Oil Cooler: Quick Connect Fittings 
OEM Part# 15102152, 15122835, 15914079

Warranty Info:
Products manufactured by XDP carry a 1-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to one (1) year from the date of sale and limited solely to the parts contained within the product's kit. Click Here for full warranty policy.

Vehicle Applications

2006 Chevy 6.6L LLY/LBZ Duramax
2007 Chevy 6.6L LLY/LBZ Duramax
2007.5 Chevy 6.6L LMM Duramax
2008 Chevy 6.6L LMM Duramax
2009 Chevy 6.6L LMM Duramax
2010 Chevy 6.6L LMM Duramax
2006 GMC 6.6L LLY/LBZ Duramax
2007 GMC 6.6L LLY/LBZ Duramax
2007.5 GMC 6.6L LMM Duramax
2008 GMC 6.6L LMM Duramax
2009 GMC 6.6L LMM Duramax
2010 GMC 6.6L LMM Duramax


  • MFG. Number XD297
  • Manufacturer Name XDP
  • Shipping Weight 35.00 lb.
  • Shipping Length 29 in.
  • Shipping Width 47 in.
  • Shipping Height 9 in.
  • Fuel Type Diesel
  • UPC 856217008427
  • Warranty Yes
  • Warranty Info 1 Year / Unlimited Mileage
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm -
  • Cross Reference # 15102152, 15122835, 15914079
  • Internal L0.00R18.00


Currently Viewing Reviews with a rating of 5. Click here to reset.
★★★★★ ★★★★★
4.9/5 Stars out of 12 Reviews
Verified Buyer
Well built/fitting
Ordered the XDP radiator kit as part of a round of maintenance for my LBZ. The stock unit was still in decent condition but I figured it couldn't hurt. Unit fit like stock and works fantastic. Given it's same size and material I didn't expect any magic temp drop but in summer towing(12klbs) in Alabama my water temps have never been above 200 with this radiator, verified via obd2 data.
Verified Buyer
Fast shipping
Shipping was extremely fast! Excited to install and see how it helps my cooling system. Order 1743852
Verified Buyer
Fit perfect
I won't lie, I wished I had an extra set of hands when installing this. It fits just like the stock radiator and as big as it is, a second set of hands would have made installation a lot easier. After 200K miles, my factory radiator was pretty dirty and I was warming up on the hills. I finally got to test out this radiator and my truck is running much cooler while pulling a 15K lb trailer up a hill in 95+ temps. I probably could have cleaned my radiator, but after that much work to get it out, I don't want to have to do it again. Really appreciate the rep at the Las Vegas office convinced me to replace cooling stack. Order 170606
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