6S5-12121-00-00 Exhaust Valve for Yamaha SX 192 1800 2013-2016

Exhaust Valve for Yamaha SX 192 1800

This exhaust valve, reference 6S5-12121-00-00, is a replacement engine component that controls exhaust gas flow out of the cylinder head on Yamaha SX 192 1800 watercraft.

Overview

This exhaust valve for Yamaha is a drop-in replacement engine component built to manage exhaust gas flow through the cylinder head. The 6S5-12121-00-00 exhaust valve suits Yamaha SX 192 1800 models from 2013 to 2016. It is intended for riders and mechanics handling top-end maintenance or rebuilding a worn cylinder head.

Built For Performance

• Direct cross-reference to OEM part number 6S5-12121-00-00
• Constructed from heat-resistant valve-grade steel
• Precision-ground stem for a consistent fit in the valve guide
• Machined face for reliable sealing against the valve seat
• Balanced design to handle sustained high-rpm marine operation

Fits These Machines

• for Yamaha SX 192 1800, 2013-2016

On-The-Job Use

• Top-end rebuilds on Yamaha 1800 series engines
• Cylinder head service after valve wear or compression loss
• Routine maintenance on personal watercraft with high operating hours
• Restoring exhaust flow on engines with burnt or sticking valves

Specs At A Glance

Good To Know

Q: How many exhaust valves does my engine need? A: Exhaust valves are typically replaced as a full set during a top-end rebuild, so check your engine's valve count before ordering. Inspect the valve guides and seats at the same time for best results.

Q: Should I replace valve seals when installing this valve? A: Yes, new valve seals are recommended whenever a valve is removed, since old seals can harden and cause oil consumption. Verify the part number against your engine before installation.

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