420931670 Power Valve O-Ring for Sea-Doo 3D RFI 800 2005

Power Valve O-Ring for Sea-Doo

This power valve O-ring for Sea-Doo seals the power valve assembly on the 3D RFI 800 platform, matching OEM cross-reference 420931670.

Overview

This power valve O-ring for Sea-Doo is a sealing ring that fits the power valve assembly on the 2005 3D RFI 800. It keeps the valve sealed so exhaust timing stays consistent under load. This is a practical replacement part for owners servicing the valve system.

Built For Performance

• OEM cross-reference 420931670 matches the original sealing dimensions
• Heat and oil resistant rubber suited to the valve housing environment
• Direct replacement for the power valve O-ring on 3D RFI 800 models
• Maintains valve sealing to support consistent exhaust timing
• Sold as a single sealing ring for one valve location

Fits These Machines

• for Sea-Doo 3D RFI 800 (2005)

On-The-Job Use

• Routine power valve servicing on the 800 RFI engine
• Resealing the valve assembly after cleaning carbon buildup
• Seasonal maintenance on 2005 3D RFI watercraft
• Correcting exhaust valve leaks that affect performance

Specs At A Glance

Good To Know

Q: How many O-rings do I need per engine? A: This listing is for one O-ring, so confirm how many valve locations your engine has before ordering. Inspecting all seals at once helps avoid repeat disassembly.

Q: Should I replace the O-ring during a valve cleaning? A: It is good practice to replace the O-ring whenever the power valve is removed, since aged rubber can harden and stop sealing properly. A fresh seal helps the valve operate smoothly.

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