420241221 Power Valve Cover Screw Adjustment for Sea-Doo GSX RFI 800 1999-2001

Power Valve Cover Screw Adjustment for Sea-Doo

This power valve cover screw adjustment, OEM cross-reference 420241221, secures and tunes the exhaust power valve cover on Sea-Doo GSX RFI 800 personal watercraft.

Overview

This power valve cover screw adjustment for Sea-Doo is the threaded hardware used to set and secure the exhaust power valve cover on the 800 RFI engine. It allows precise adjustment of power valve operation so the engine delivers smooth low-end response and strong top-end pull. A practical replacement for riders servicing or rebuilding the top end of their GSX RFI 800.

Built For Performance

• Direct cross-reference to OEM part number 420241221
• Threaded design for accurate power valve cover adjustment
• Construction suited to the heat and vibration of marine exhaust use
• Secures the cover to protect internal power valve components
• Fits the 800 RFI engine used across 1999 to 2001 GSX RFI 800 models

Fits These Machines

• for Sea-Doo GSX RFI 800, 1999
• for Sea-Doo GSX RFI 800, 2000
• for Sea-Doo GSX RFI 800, 2001

On-The-Job Use

• Top-end rebuilds and power valve servicing
• Adjusting power valve cover tension for proper valve operation
• Routine maintenance on 800 RFI engines
• Restoring a stripped or worn adjustment screw

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket power valve cover screw adjustment that cross-references OEM number 420241221. Always phrase fitment as for Sea-Doo.

Q: How many of these should I order? A: Power valve covers typically use more than one screw, so inspect your cover and order the quantity your machine requires. Confirm against your serial number before purchase.

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