8GL-12121-10-00 Exhaust Valve for Yamaha AR 210 1050 2017-2022

Exhaust Valve for Yamaha

This exhaust valve with OEM cross-reference 8GL-12121-10-00 controls exhaust flow out of the cylinder head on Yamaha 1050 marine engines.

Overview

This exhaust valve is a direct-fit replacement for Yamaha 1050 marine engines, cross-referencing OEM part number 8GL-12121-10-00. It seals combustion gases on the compression stroke and releases them on the exhaust stroke. Built for Yamaha boat owners and marine mechanics handling top-end service.

Built For Performance

• OEM cross-reference 8GL-12121-10-00 for exact fitment matching
• Machined valve head for consistent sealing against the valve seat
• Heat-resistant alloy construction suited to marine exhaust temperatures
• Precision stem diameter for proper valve guide fit
• Direct replacement for worn or burnt exhaust valves

Fits These Machines

• for Yamaha AR 210 1050, 2017-2022

On-The-Job Use

• Top-end rebuilds on Yamaha 1050 marine engines
• Replacing burnt or compression-leaking exhaust valves
• Valve seat and guide service during cylinder head work
• Routine maintenance on Yamaha jet boat powerplants

Specs At A Glance

Good To Know

Q: How many of these valves does my engine need? A: This listing is for a single exhaust valve, so order the quantity that matches your engine's cylinder count. Confirm your head configuration before ordering.

Q: Should exhaust valves be replaced in full sets? A: Marine engine builders often replace all exhaust valves at once during a top-end rebuild for even wear. Inspect the seats and guides at the same time.

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