6S5-12121-00-00 Exhaust Valve for Yamaha 242 X E-Series 1800 2016-2020

Exhaust Valve for Yamaha

This exhaust valve, bearing OEM cross-reference 6S5-12121-00-00, controls exhaust flow on Yamaha 242 X E-Series 1800 boats from 2016 to 2020.

Overview

This exhaust valve serves as a direct replacement for the factory unit on Yamaha 242 X E-Series 1800 watercraft. The valve regulates exhaust gas exit from the engine, helping maintain proper combustion and exhaust scavenging. It is built for owners performing routine engine maintenance or replacing a worn or damaged exhaust valve.

Built For Performance

• OEM cross-reference 6S5-12121-00-00 for exact fitment matching
• Constructed from heat-resistant materials suited to exhaust temperatures
• Precision-machined to factory tolerances for a proper seal
• Designed to maintain consistent exhaust flow across the RPM range
• Direct replacement, no modification required for installation

Fits These Machines

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

On-The-Job Use

• Engine rebuilds and top-end service on Yamaha 242 X E-Series boats
• Replacing a burned or sticking exhaust valve
• Scheduled maintenance intervals requiring valve inspection or replacement

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: This is an aftermarket exhaust valve with OEM cross-reference 6S5-12121-00-00 for Yamaha applications. It is not an original Yamaha brand product.

Q: How do I confirm this fits my boat? A: Check your engine's part number against 6S5-12121-00-00 or consult your service manual. Serial number variations can affect fit, so verify before ordering.

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