This 4-piece kit is constructed of multi-layered 301 stainless steel. The rolled edge creates a tight seal between the manifold and the turbo inlet. PPE Up-Pipe Gaskets perform better during extreme changes in temperature, ensuring a leak-free seal. Fits stock GM and PPE High-Flow Up-Pipes for the GM Duramax L5P.

GM Equivalent P/Ns: 12688018, 12676608