420854410 Power Valve for Sea-Doo RX 951 2000-2002

Power Valve for Sea-Doo RX 951

This power valve (part number 420854410) is a replacement exhaust valve component that controls exhaust port timing on the Sea-Doo RX 951, helping the engine deliver power across the rev range.

Overview

This power valve, carrying part number 420854410, is a direct-fit exhaust valve component built for the Sea-Doo RX 951. The power valve adjusts exhaust port height to strengthen low-end response while keeping the top-end pull clean. It suits owners servicing or rebuilding a 2000 to 2002 Sea-Doo RX 951.

Built For Performance

• Direct replacement for part number 420854410
• Controls exhaust port timing to broaden the powerband
• Built for the demands of two-stroke marine exhaust
• Restores factory valve function when the original is worn or seized
• Straightforward install during top-end service

Fits These Machines

• for Sea-Doo RX 951, 2000
• for Sea-Doo RX 951, 2001
• for Sea-Doo RX 951, 2002

On-The-Job Use

• Top-end rebuilds on the 951 engine
• Restoring lost low-end response after valve wear
• Routine exhaust valve maintenance
• Replacing a seized or damaged power valve

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement power valve for Sea-Doo applications, not an original brand component. It is offered as an alternative replacement for part number 420854410.

Q: Do I need to replace the valve on both cylinders? A: The 951 engine uses one power valve per cylinder, so during a rebuild it is common to service both at the same time. Check each valve for sticking or damage before ordering.

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