Quicksilver 881631 Cylinder Head Gasket Port Side

The Quicksilver 881631 is a genuine OEM cylinder head gasket designed specifically for the port side of MerCruiser big block engines. This precision-engineered gasket ensures a proper seal between the cylinder head and engine block, preventing coolant and oil leaks while maintaining optimal compression.

Key Features:

• Genuine Mercury Marine OEM replacement part
• Port side cylinder head gasket application
• Manufactured to exact factory specifications
• High-quality materials designed for marine environments
• Ensures proper sealing and compression

This gasket is engineered specifically for MerCruiser 496 Mag and HO engines, as well as MIE 8.1S and HO engine applications. As a Quicksilver original equipment part, it provides the precise fit and durability expected from Mercury Marine products. The part supersedes Mercury part number 881631001.