420931670 Power Valve O-Ring for Sea-Doo GSX LTD 951 1998-1999

Power Valve O-Ring for Sea-Doo

This power valve O-ring for Sea-Doo provides the seal that keeps the power valve assembly on 951 and 800 engine platforms operating cleanly, matching OEM cross-reference 420931670.

Overview

This power valve O-ring for Sea-Doo is a sealing component that fits into the power valve assembly on 1998-1999 GSX LTD 951 models. The O-ring helps maintain proper sealing around the valve so the engine's exhaust timing stays consistent. It is a straightforward replacement part for riders doing routine maintenance.

Built For Performance

• OEM cross-reference 420931670 matches the original sealing diameter
• Rubber compound resists heat and oil exposure inside the valve housing
• Direct replacement for the power valve O-ring on GSX LTD 951 models
• Keeps the valve sealed to preserve exhaust timing and engine response
• Sold as a single sealing ring for one valve location

Fits These Machines

• for Sea-Doo GSX LTD 951 (1998-1999)

On-The-Job Use

• Routine power valve maintenance on 951 engines
• Rebuilding or resealing the valve assembly after cleaning
• Seasonal tune-ups on 1998-1999 GSX LTD watercraft
• Repairing exhaust valve leaks that affect engine performance

Specs At A Glance

Good To Know

Q: How many O-rings do I need per engine? A: This listing is for a single O-ring, so check your valve assembly and order the quantity needed for each valve location. Inspect all seals at the same time to avoid repeat teardowns.

Q: Should I replace the O-ring during a valve cleaning? A: Replacing the O-ring any time the power valve is removed is good practice since old rubber can harden and lose its sealing ability. A fresh seal helps the valve travel smoothly and seal correctly.

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