6S5-12121-00-00 Exhaust Valve for Yamaha 212 X 1800 2012-2020

Exhaust Valve for Yamaha

This exhaust valve, part number 6S5-12121-00-00, is a replacement engine component that controls exhaust flow on Yamaha 1800-series marine engines.

Overview

This exhaust valve for Yamaha is built to replace the factory valve on 1800-series marine engines. It manages exhaust gas flow to keep combustion cycles running clean and consistent. This exhaust valve suits owners performing routine top-end service on their Yamaha 212 X.

Built For Performance

• Precision ground valve face for a clean seal against the seat
• Heat-resistant alloy construction suited to marine exhaust temperatures
• Correct stem diameter for a proper fit in the valve guide
• Direct cross-reference to OEM number 6S5-12121-00-00
• Balanced dimensions to match the original valve profile

Fits These Machines

• for Yamaha 212 X 1800 (2012-2020)

On-The-Job Use

• Top-end rebuilds on Yamaha 1800 marine engines
• Valve replacement during scheduled engine service
• Restoring compression on high-hour jet boat engines

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: This is an aftermarket exhaust valve that cross-references OEM number 6S5-12121-00-00, not an original Yamaha product. Q: Should I replace valves in sets? A: When one exhaust valve shows wear, replacing the full set during a rebuild is common practice for even performance.

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