6S5-12121-00-00 Exhaust Valve for Yamaha 190 FSH Deluxe 2016-2022

Exhaust Valve for Yamaha

This exhaust valve for Yamaha marine engines is a replacement component that controls exhaust flow in the 1800 series powerplant, cross-referencing OEM part 6S5-12121-00-00.

Overview

This exhaust valve for Yamaha is a drop-in replacement engine valve that regulates exhaust gas exit from the cylinder head on 1800 series marine engines. The exhaust valve for Yamaha is built to withstand the heat and stress of continuous marine operation, making it a solid choice for engine rebuilds and top-end service. It suits boat owners and marine mechanics handling maintenance on Yamaha 190 FSH platforms.

Built For Performance

• Cross-references OEM part 6S5-12121-00-00 for confident matching
• Constructed from heat-resistant valve-grade steel
• Precision-ground stem for smooth guide fit
• Designed for 1800 series four-stroke marine engines
• Handles sustained high-RPM exhaust temperatures

Fits These Machines

• for Yamaha 190 FSH Deluxe 1800 (2016-2022)
• for Yamaha 190 FSH 1800 (2016-2019)

On-The-Job Use

• Top-end engine rebuilds and valve jobs
• Cylinder head service on 1800 series marine engines
• Routine maintenance for jet boat owners
• Marine mechanic shop repairs

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 for fitment. It is not an original Yamaha product.

Q: How many valves do I need for a full replacement? A: Valve count depends on your engine configuration, so verify your cylinder head layout before ordering. Ordering per valve lets you replace only what is needed.

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