Sierra 18-0488 Marine Intake Manifold Gasket for Mercruiser 5.0L 5.7L V8

The Sierra 18-0488 marine intake manifold gasket is engineered specifically for Mercruiser 350 Mag 5.0L and 5.7L/LX V8 engines manufactured from 1996 and newer. This precision-cut gasket features a rectangular port design that ensures proper sealing between the intake manifold and cylinder heads, preventing vacuum leaks and maintaining optimal engine performance.

Key Features:

• Direct replacement for Mercruiser intake manifold gaskets on 5.0L and 5.7L V8 marine engines
• Rectangular port configuration matches factory specifications
• High-quality gasket material withstands extreme marine engine temperatures and pressures
• Fits 1996 and newer MCM 350 Mag, 5.0L, and 5.7L/LX engine models
• Manufactured by Sierra International, a trusted name in marine replacement parts

This gasket is essential for intake manifold removal and installation jobs, whether you're performing routine maintenance, rebuilding your engine, or replacing a leaking gasket. Proper sealing prevents unmetered air from entering the engine, which can cause rough idling, poor fuel economy, and reduced power output.