6S5-12121-00-00 Exhaust Valve for Yamaha VXR 1800 2011-2019 PWC

Exhaust Valve for Yamaha

This exhaust valve replaces OEM part 6S5-12121-00-00 for Yamaha VXR 1800 watercraft, regulating exhaust gas flow for consistent engine performance.

Overview

This exhaust valve is a replacement component for Yamaha VXR 1800 personal watercraft, cross-referenced to OEM part number 6S5-12121-00-00. It controls exhaust discharge from the combustion chamber, supporting proper compression and engine breathing. Suited to riders and technicians servicing 2011 through 2019 models who want a reliable valve at a sensible price.

Built For Performance

• Cross-referenced to OEM part number 6S5-12121-00-00 for direct fitment
• Heat-resistant alloy steel construction for combustion chamber durability
• Precision-ground face for a dependable seal against the valve seat
• Factory-matched stem dimensions for correct guide alignment
• Withstands sustained high-RPM marine use without premature wear

Fits These Machines

• for Yamaha VXR 1800 (2011-2019)

On-The-Job Use

• Top-end rebuilds on Yamaha 1800cc marine engines
• Valve clearance service and adjustment
• Compression restoration on high-hour watercraft
• Cylinder head repair and refurbishment

Specs At A Glance

Good To Know

Q: Can I install this valve without machining the head? A: It depends on the condition of the valve seat and guide, so inspect both before installation and machine or replace them if worn.

Q: Is this a genuine Yamaha part? A: No, this is a replacement exhaust valve cross-referenced to the OEM number, made to fit the listed Yamaha models.

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