6S5-12121-00-00 Exhaust Valve for Yamaha 275E 1800 2019-2021

Exhaust Valve for Yamaha

The Exhaust Valve for Yamaha is a direct replacement engine component that manages exhaust gas flow from the combustion chamber, cross-referenced to OEM part number 6S5-12121-00-00.

Overview

This exhaust valve for Yamaha marine engines provides a precise replacement for worn or damaged valves in the cylinder head. The exhaust valve is manufactured to OEM dimensions so it seats and seals correctly. It is intended for owners and technicians servicing Yamaha 275E 1800 models from 2019 through 2021.

Built For Performance

• Cross-referenced to OEM part number 6S5-12121-00-00 for direct replacement
• Manufactured to OEM dimensions for correct stem and head sizing
• Heat-resistant alloy construction suited to exhaust-side operating temperatures
• Precision-ground stem surface for smooth travel in the valve guide
• Sealing face machined for consistent seat contact

Fits These Machines

• for Yamaha 275E 1800, 2019-2021

On-The-Job Use

• Cylinder head rebuilds and top-end service on Yamaha 1800 marine engines
• Replacing burned or leaking exhaust valves identified during compression testing
• Routine valve clearance checks and valve train maintenance
• Marine engine repair shops handling Yamaha 275E service work

Specs At A Glance

Good To Know

Q: How many exhaust valves does this listing include? A: This listing covers one exhaust valve unless the quantity option states otherwise. Confirm the quantity needed for your cylinder head before ordering.

Q: Should the valve seat and guide be inspected at the same time? A: Yes, worn guides or seats can shorten the life of a new exhaust valve. Measuring both during installation helps ensure a proper seal.

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