Upgrade the factory transmission cooler in your 2006-2010 GM 6.6L Duramax LBZ/LMM with the XDP Xtra Cool Direct-Fit Transmission Oil Cooler XD310. Manufactured to provide you with the ultimate in strength and durability, XDP's Xtra Cool Transmission Oil Coolers are made using techniques borrowed from the HD and semi-truck industry. Xtra Cool Oil Coolers feature a high-efficiency core to maximize cooling potential for your Allison transmission. Each kit comes ready to install with the brackets, hardware, and necessary fittings to make this a bolt-on installation.

• XDP cannot guarantee fitment with all aftermarket transmission lines.
• Please match aftermarket lines with the cooler fittings specified above.

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

• Core Width: 20"
• Core Height: 4-5/8*
• Core Thickness: 2'
• Overall Length: 23"
• Cooler Fittings: 7/8-14 UNF