Valve Cover Gasket SIERRA 18-2845

Compatible Engines

The SIERRA 18-2845 valve cover gasket is a critical component ensuring the seal of the upper assembly of your outboard or sterndrive engine. This product is specifically designed for GM 305/350 CID (5.0L, 5.7L) engines commonly found in MERCRUISER and OMC units. Please verify part compatibility before purchasing by comparing the catalog number 18-2845 with your engine's OE number in the owner's manual. Due to the complexity of marine parts applications, we recommend contacting our customer support team if you have any doubts regarding fitment for your specific model.

Installation and Maintenance

Replacing a valve cover gasket requires precision to ensure optimal engine performance. Use the genuine SIERRA gasket to prevent oil leaks and maintain proper pressure, which directly impacts engine longevity. During installation, ensure the cover surface is clean and free of scratches. Do not overtighten the mounting bolts; strictly follow the torque specifications recommended by the engine manufacturer.

• Original SIERRA Quality – guarantees durability and perfect geometric fit.
• Leak Protection – effectively prevents oil from escaping the unit.
• Easy Installation – replacement does not require specialized tools if you have a basic kit.
• Availability – fast shipping and stable stock levels for your convenience.