Sierra 118-0603 Marine Exhaust Manifold Gasket Set

The Sierra 118-0603 is a marine exhaust manifold gasket set engineered to provide a reliable, leak-free seal between the exhaust manifold and engine block on inboard marine engines. Designed as a direct OEM-replacement component, this gasket set meets or exceeds original equipment specifications for fit, form, and function.

Key Features:

• Complete gasket set includes all necessary gaskets for a full exhaust manifold service
• Manufactured from high-quality, heat-resistant materials designed to withstand the demanding thermal and chemical environment of marine exhaust systems
• Precision die-cut for accurate fitment and consistent sealing performance
• Meets or exceeds OEM specifications for reliable, long-lasting performance
• Designed for inboard marine engine applications

Sierra International is a trusted name in marine replacement parts, offering boaters and marine technicians dependable aftermarket solutions. The 118-0603 exhaust manifold gasket set is an ideal choice for routine maintenance or exhaust system repairs, helping to prevent exhaust leaks and maintain safe, efficient engine operation.