Sierra Exhaust Manifold Gasket for GM Marine Engines

The Sierra exhaust manifold gasket line is made for GM marine engines. It seals the joint between the exhaust manifold (or riser) and the cylinder head. A good seal helps stop exhaust leaks, and it helps keep exhaust gases, heat, and noise out of the engine compartment.

Key Features:

• Designed specifically for marine applications on GM-based inboard and sterndrive engines
• Helps prevent exhaust leaks at the manifold-to-head joint
• Built to handle the repeated heat cycling and the moisture and corrosive conditions found in marine engine compartments
• Made as a direct-fit replacement to restore proper sealing during exhaust manifold service
• Sierra is a long-established name in marine engine parts and maintenance products

Choose the gasket that matches your engine and manifold configuration. Fitting a new gasket whenever the manifold is removed is a good practice. It supports reliable sealing and helps protect your engine.