420854354 Power Valve for Sea-Doo GTX RFI 800 1998-2002

Power Valve for Sea-Doo

This power valve (OEM cross-reference 420854354) is a replacement exhaust valve component that regulates exhaust port timing on Sea-Doo RFI 800 engines.

Overview

This power valve is a replacement exhaust valve for the Sea-Doo GTX RFI 800 platform. It controls exhaust port height to tune the powerband on the 800 RFI engine. This power valve suits riders maintaining or rebuilding a 1998 to 2002 GTX RFI 800.

Built For Performance

• OEM cross-reference 420854354 for direct fitment matching
• Controls exhaust port timing to sharpen low and mid range response
• Constructed for the Rotax 800 RFI two stroke powerplant
• Replacement component for a worn or sticking exhaust valve
• Sold as a single power valve unit

Fits These Machines

• for Sea-Doo GTX RFI 800 (1998-2002)

On-The-Job Use

• Restoring exhaust valve function on a high hours RFI 800 engine
• Top end rebuilds where the power valve is reused or renewed
• Routine maintenance on GTX RFI 800 watercraft

Specs At A Glance

Good To Know

Q: Does this power valve fit both carbureted and RFI 800 engines? A: This listing targets the RFI 800 GTX. Verify your engine code and serial number before ordering.

Q: How many power valves does an RFI 800 engine use? A: The RFI 800 uses one power valve per cylinder, so order the quantity your rebuild requires.

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