GMC Sierra Exhaust Gaskets and Seals
This page brings together exhaust gaskets and seals for the GMC Sierra, covering model years 2002–2020. The range includes manifold gasket sets, pipe flange gaskets, and header gaskets — the components that sit at the joints of the exhaust system. Select your year above and we'll show only the exhaust gaskets and seals that fit your GMC Sierra. Fitment is checked against our vehicle data for every part listed.
Cometic C15193HTS LS1/LS6/LQ4 Gen III Small Block Exhaust Manifold Gasket Set
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Cometic C5020HTS GM Gen V Small Block V8 Exhaust Header Gasket Set
What's here for your GMC Sierra
- Exhaust Manifold Gasket Sets
- Exhaust Pipe Flange Gaskets
- Exhaust Manifold Gaskets
- Exhaust Header Gaskets
The widest selection here comes from Cometic, Victor, Mr. Gasket, and Hedman Hedders, covering a broad span of Sierra model years and configurations across each gasket type. Other categories GMC Sierra owners shop for: GMC Sierra Exterior Lights, GMC Sierra Valve Train Parts and GMC Sierra Springs and Suspension Parts, or browse all GMC Sierra parts and accessories.