420837352 Rotary Shaft for Sea-Doo Challenger 1800 800 1998-1999

Rotary Shaft for Sea-Doo

This rotary shaft, part number 420837352, is a replacement driveline component that transfers power from the engine to the jet pump on personal watercraft and sport boats.

Overview

This rotary shaft serves as a direct replacement for the original component on Sea-Doo watercraft, carrying torque from the engine through to the impeller. The rotary shaft is built to OEM dimensions so it seats properly in the driveline assembly without modification. It suits riders and mechanics performing driveline repairs or rebuilds on the Challenger 1800 800 platform.

Built For Performance

• Manufactured to OEM reference 420837352 for a direct-fit replacement
• Machined from hardened steel for reliable torque transfer
• Splined ends designed to engage the driveline couplings
• Balanced construction to reduce vibration at speed
• Corrosion-resistant finish suited to marine environments

Fits These Machines

• for Sea-Doo Challenger 1800 800, 1998-1999

On-The-Job Use

• Driveline rebuilds on the Challenger 1800 800
• Replacing a worn or damaged rotary shaft
• Seasonal maintenance on jet propulsion systems
• Shop and DIY repairs on personal watercraft

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket rotary shaft manufactured to fit the listed Sea-Doo application. Always compare the part number 420837352 against your existing component before ordering.

Q: Can I install this myself? A: Driveline work requires mechanical experience and proper tools, so professional installation is recommended. Confirm fitment with your serial number before starting the job.

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