420837352 Rotary Shaft for Sea-Doo GTX RFI 800 1998-2002

Rotary Shaft for Sea-Doo

This rotary shaft is a replacement driveline component designed to transfer power through the jet pump assembly on personal watercraft, and it carries OEM cross-reference 420837352.

Overview

This rotary shaft serves as a direct-fit driveline component for personal watercraft riders who need a reliable replacement for a worn or damaged shaft. The rotary shaft for Sea-Doo connects the engine output to the jet pump, keeping power delivery smooth through every throttle position. It is built for DIY mechanics and shops servicing older Sea-Doo models that need a dependable rotary shaft for Sea-Doo without paying OEM prices.

Built For Performance

• Constructed from corrosion-resistant marine-grade metal for long service in wet environments
• Precision-machined splines and bearing surfaces for proper alignment with the jet pump
• Engineered to handle the torque loads of 800cc RFI engines under continuous operation
• Sized to match OEM dimensions for a straightforward replacement install
• Balanced shaft geometry to reduce vibration at high RPM

Fits These Machines

• for Sea-Doo GTX RFI 800, 1998-2002

On-The-Job Use

• Routine driveline repair after shaft wear or corrosion is found
• Jet pump service and impeller replacement jobs
• Restoring older GTX RFI 800 watercraft to running condition
• Preventive replacement during engine or pump rebuilds

Specs At A Glance

Good To Know

Q: Does this rotary shaft come with bearings or seals? A: The listing covers the rotary shaft itself, so check your existing bearings and seals and replace them separately if worn. Reusing worn bearings with a new shaft can shorten the life of both parts.

Q: How do I confirm this shaft fits my watercraft? A: Match the part number 420837352 and confirm your model and year fall within the 1998-2002 GTX RFI 800 range. Serial number differences can affect fit, so verify 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.