420253255 Exhaust Power Valve Cap for Sea-Doo GSX RFI 800 1999

Exhaust Power Valve Cap for Sea-Doo

This exhaust power valve cap, OEM cross-reference 420253255, seals and protects the power valve assembly on Sea-Doo 800 RFI engines.

Overview

This exhaust power valve cap is a direct replacement component for the power valve system on Sea-Doo 800 RFI engines. The cap helps maintain proper sealing of the power valve, which regulates exhaust flow for consistent power delivery. It is a practical part for riders maintaining a 1999 GSX RFI 800.

Built For Performance

• OEM cross-reference 420253255 for accurate fitment matching
• Designed to seal the power valve assembly against exhaust leakage
• Constructed for the demands of marine two-stroke exhaust systems
• Helps maintain correct power valve operation for consistent engine response
• Direct-fit replacement for the original cap

Fits These Machines

• for Sea-Doo GSX RFI 800, 1999

On-The-Job Use

• Routine power valve maintenance on Sea-Doo 800 RFI engines
• Replacing a worn or damaged exhaust power valve cap
• Top-end servicing and rebuilds
• Restoring proper exhaust sealing on personal watercraft

Specs At A Glance

Good To Know

Q: How do I know this cap fits my watercraft? A: Match the OEM cross-reference 420253255 and your model and year against the fitment list before ordering. Serial number differences can affect fitment, so verifying your machine details is recommended.

Q: Is this an original Sea-Doo part? A: This is an aftermarket replacement exhaust power valve cap made to fit Sea-Doo models, not an original brand product. It is designed to match the function of the original component.

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