6S5-11181-00-00 Head Gasket for Yamaha 242 X E-Series 1800

Head Gasket for Yamaha

This head gasket for Yamaha marine engines seals the cylinder head to the engine block, maintaining compression and keeping coolant and oil passages separated under load.

Overview

This head gasket for Yamaha is a direct replacement sealing component for 1800 series marine engines, built to hold compression and contain coolant and oil at the head-to-block joint. It suits owners performing top-end service or a full rebuild who need a reliable head gasket for Yamaha applications. The gasket cross-references OEM part number 6S5-11181-00-00 for straightforward matching.

Built For Performance

• Cross-references OEM part number 6S5-11181-00-00
• Seals the cylinder head to block joint to maintain compression
• Separates coolant and oil passages at the mating surface
• Constructed for the heat and pressure of 1800 series marine engines
• Designed as a direct-fit replacement for the head-to-block interface

Fits These Machines

• for Yamaha 242 X E-Series 1800, 2016-2020

On-The-Job Use

• Top-end rebuilds on 1800 series marine engines
• Cylinder head removal and reinstallation service
• Compression loss or coolant seepage repairs at the head joint
• Routine engine refresh on boats in seasonal use

Specs At A Glance

Good To Know

Q: Does this gasket require new head bolts? A: Many marine engine head bolts are torque-to-yield and should be replaced during reassembly. Check the service manual for your specific 1800 series engine.

Q: Should I resurface the head before installing this gasket? A: If the head or block deck is warped or pitted, resurfacing is recommended so the gasket can seal properly. Measure flatness before installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.