SIERRA 18-4367 Exhaust Manifold Gasket Set

Compatible Engines

The SIERRA 18-4367 Exhaust Manifold Gasket Set is a critical component ensuring the integrity of the exhaust and cooling systems in marine engines. This product is designed for GM units with displacements of 153 and 181 CID (2.5 and 3.0 liters), including engines with 120 and 140 HP. The set includes all necessary seals: elbow gasket, exhaust manifold gasket, carburetor base gasket, and thermostat housing gasket, allowing for a comprehensive repair without needing to purchase additional parts.

Since official source data does not provide a detailed list of compatible models, we recommend verifying fitment by comparing catalog number 18-4367 or the original OE number with your engine's technical documentation. If you have any doubts about compatibility, contact our customer support team, who will be happy to help select the correct part.

Installation and Maintenance

Replacing exhaust manifold gaskets is an operation that should not be overlooked. Worn gaskets can lead to exhaust leaks, which not only reduce engine performance but also pose a health risk due to carbon monoxide inhalation. During installation, we recommend thoroughly cleaning mounting surfaces from carbon buildup and old gasket residue. Using a fresh SIERRA set guarantees a perfect fit and durability, and regular inspection of gasket condition before the boating season will extend your engine's lifespan.

• Complete gasket set: manifold, elbow, carburetor, and thermostat.
• High manufacturing quality compliant with SIERRA standards.
• Optimal sealing preventing exhaust and coolant leaks.
• Designed for GM 153 & 181 CID (2.5 & 3.0L) engines.