Fits 2004.5-2005 Duramax LLY only.

Kit contains all of the common gaskets and oring seals normally replaced in a head gasket job. Kit includes 2 grade C head gaskets, exhaust manifold and up pipe gaskets, injector install coppers and orings, themostat housing gaskets as well as orings for heater, hot pipe, and bypass tube, EGR gaskets, intake flat rings and orings along with a tube of AC Delco sealant for the intake manifold to head. We seldom replace the upper (rubber) or lower (stainless steel shim) valve cover gaskets unless destroyed so we have omitted them from this kit. They are, however offered in a separate listing.

Recommended additions: ARP Head studs, thermostat pair, water pump with welded impeller, and glow plugs. All available on our site.