6S5-12121-00-00 Exhaust Valve for Yamaha 252SE 1800 2021-2023

Exhaust Valve for Yamaha

The Exhaust Valve for Yamaha 252SE 1800 delivers a precision replacement valve, cross-referenced to OEM part 6S5-12121-00-00, that controls exhaust flow in your engine cylinder head.

Overview

This Exhaust Valve for Yamaha is a replacement engine valve that seals and releases exhaust gases from the combustion chamber during operation. The exhaust valve for Yamaha helps maintain compression, timing, and reliable exhaust flow in 1800 engines. It suits boat owners and marine mechanics servicing or rebuilding top-end components.

Built For Performance

• Machined to match OEM part 6S5-12121-00-00 dimensions
• Durable valve head construction for high-heat exhaust operation
• Accurate seat contact for consistent compression sealing
• Direct-fit replacement for worn or burned exhaust valves
• Suited to 1800 engine top-end service

Fits These Machines

• for Yamaha 252SE 1800 (2021-2023)

On-The-Job Use

• Top-end engine rebuilds or valve jobs
• Replacing burned or leaking exhaust valves
• Restoring compression and exhaust sealing in 1800 engines
• Marine shop and DIY jet boat engine service

Specs At A Glance

Good To Know

Q: Should exhaust valves be replaced as a set? A: Many engine builders replace valves as a matched set and re-cut the seats to ensure even sealing, so consult your service manual. A: Confirm your engine model and valve clearance specs before installation.

Q: Is this an OEM Yamaha part? A: This is a replacement Exhaust Valve for Yamaha built to OEM cross-reference 6S5-12121-00-00 and is not an original brand product. A: Verify the part number against your existing component for compatibility.

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