6S5-12121-00-00 Exhaust Valve for Yamaha FX Cruiser HO 1900 2024

Exhaust Valve for Yamaha

This exhaust valve for Yamaha is a replacement component built to OEM cross-reference 6S5-12121-00-00, handling exhaust flow on FX Cruiser HO 1900 models across 2024-2026.

Overview

This exhaust valve for Yamaha is a direct-fit replacement matched to the 6S5-12121-00-00 reference for the FX Cruiser HO 1900. It seals and releases exhaust gases from the combustion chamber, keeping engine breathing correct and power delivery steady. It is aimed at owners performing top-end service or replacing a damaged valve on a 2024-2026 machine.

Built For Performance

• Cross-references 6S5-12121-00-00 for simple identification and ordering
• Machined valve face and stem for reliable seat sealing
• Heat-resistant alloy suited to sustained exhaust temperatures
• Tight dimensional control for correct guide and stem fit
• Built for the FX Cruiser HO 1900 engine family

Fits These Machines

• for Yamaha FX Cruiser HO 1900, 2024-2026

On-The-Job Use

• Cylinder head and valve train service on the FX Cruiser HO 1900
• Replacing a burned, bent, or poorly sealing exhaust valve
• Top-end rebuilds following overheating or carbon fouling
• Routine maintenance on 2024-2026 personal watercraft

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: This is an aftermarket exhaust valve built to the 6S5-12121-00-00 cross-reference, not an original brand item. Verify your engine code and serial number before ordering.

Q: How many valves should I order? A: Order the quantity your engine needs, as this listing is priced per valve. Check the seats and guides while the head is off.

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