Don't just replace the failed radiator in your 2011-2016 GM 6.6L Duramax with a stock replacement, upgrade it with the XDP X-TRA Cool Direct-Fit Replacement Radiator XD292. Designed for a simple bolt-on installation, XDP's X-TRA Fit Radiators look like a factory replacement, but are upgraded to be stronger and better than the factory unit. Manufactured with several techniques borrowed from the HD and Semi truck industry, the X-TRA Cool Radiators are built to give you a long-lasting direct-fit option to protect your engine and cooling system.