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XDP X-TRA Cool Direct-Fit Transmission Oil Cooler - 6.6L DURAMAX (2001-2005)

$ 205.95

X-TRA Cool Direct-Fit Transmission Oil Cooler

Features & Details:

  • Direct-Fit
  • Replaces Factory Cooler
  • Upgraded Design For Increased Durability
  • High-Efficiency Core To Maximize Cooling


The XDP X-TRA Cool Direct-Fit Transmission Oil Cooler XD309 is a direct upgrade for the factory transmission oil cooler in your 2001-2005 GM 6.6L Duramax LB7/LLY. XDP’s XTRA-Cool Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck industry to provide you with the ultimate in strength and durability. Built for more than just increased strength, the XD309 features a high-efficiency core that is specially designed to maximize transmission cooling potential over the factory unit. Each kit comes ready to install with the needed fittings, brackets, and hardware to make this a bolt-on installation for your GM Duramax/Allison powertrain.


  • Core Width: 12-1/2"
  • Core Height: 7-3/4"
  • Core Thickness: 2"
  • Overall Length: 16"
  • Cooler Fittings: 7/8-14 UNF