Sierra Manifold End Cap Gasket

Sierra manifold end cap gaskets are replacement exhaust manifold end cap gaskets (also called manifold end plate gaskets) for marine engines and sterndrives. They seal the end caps and riser adapter joints on exhaust manifolds. This keeps exhaust gases and cooling water inside the manifold passages.

Key Features:

• Aftermarket replacement parts made to meet or exceed OEM requirements
• Made for the exhaust and cooling systems of OMC and MerCruiser-style marine engines
• Interchange with common OEM and aftermarket part numbers, including Barr, GLM, and OMC or Mercury references
• Built for the heat, moisture, and corrosive conditions of marine use
• Backed by Sierra's reputation as a supplier of premium aftermarket marine replacement parts

Replace the end cap gasket whenever you remove an exhaust manifold, end cap, or riser. A fresh gasket helps prevent exhaust and water leaks and restores a proper seal. Choose the specific part number for your engine and manifold from the options listed on this page.