Its always advisable to use new seals, O-rings, and gaskets when possible. This kit supplies everything you need in one package when doing a CP4/CP3 Conversion or a Catastrophic failure on your 2011-2016 Duramax LML.

Kit Contains:

*1-GM EGR-Recirculation Pipe Gasket

*2-GM EGR Valve Gasket

*2-GM EGR to Y-Bridge Gasket

*1-GM EGR Valve Cooler Gasket

*1-GM EGR Valve Gasket (between EGR Cooler Assembly)

*2-GM Exhaust Manifold to Up-Pipe Gasket

*2-GM Turbo to Up-Pipe Gasket

*1-GM Up-Pipe to EGR Gasket (Cooler By-Pass)

*2-GM Intake Runner Y-Bridge Gasket

*2-GM Thermostat Housing Gasket

*1-GM Turbo Oil Feed Banjo Seal

*1-GM Return Line Injector Seal

*1-GM Upper Intake Y-Bridge Seal

*1-GM Upper Seal, Coolant By-Pass Tube

*1-GM Lower Seal, Coolant By-Pass Tube

*1-GM Turbo Oil Return Pipe Gasket



Genuine GM Parts carry the Factory warranty.