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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


★★★★★ ★★★★★
4.9/5 Stars out of 12 Reviews
Great replacement Radiator
Fit was snug but great. Every hole and mounting bracket location was spot on, and I was pleasantly surprised to see that new O-rings were included. Previously in the summer my truck (LBZ Duramax) would run 200+ degrees in traffic and approach 240 degrees pulling my boat up a long grade. Now I can watch the thermostat (174 degree) opening and closing on the temp gauge in 90+ degree weather with the A/C going full blast in stop and go traffic. I'll be tow testing in a couple of weeks.
Verified Buyer
Great fit, 1166589
Bought this radiator because I was having cooling issues when my truck would pull trailers up even the slightest grade. This radiator paired with the low temp thermostats fixed my issue and I’m backing to pulling my trailer with ease passing the other trucks.
Verified Buyer
Excellent product! Sturdy and structurally sound product. I bought this and xtra cool transmission cooler as well!
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