290935736 Rotary Shaft Gear for Sea-Doo Sportster 1800 720 1998-1999

Rotary Shaft Gear for Sea-Doo Sportster 1800 720

This rotary shaft gear is a replacement driveline component that transfers rotational power inside the jet pump assembly, and it is referenced under OEM part number 290935736.

Overview

This rotary shaft gear is built to fit the Sea-Doo Sportster 1800 720 driveline and serves as a direct replacement for a worn or damaged gear. The rotary shaft gear restores reliable power transfer through the pump so the impeller spins true at speed. It is intended for Sea-Doo owners handling their own jet boat maintenance and rebuilds.

Built For Performance

• OEM cross-reference 290935736 for straightforward part matching
• Machined gear teeth designed for consistent load transfer
• Fits the rotary shaft position in the jet pump assembly
• Suits 720 engine driveline applications
• Construction aimed at marine duty in wet conditions
• Direct replacement fit for the listed Sportster 1800 application

Fits These Machines

• for Sea-Doo Sportster 1800 720, 1998-1999

On-The-Job Use

• Jet pump driveline rebuilds and gear refresh
• Restoring power transfer after gear wear or chipping
• Propulsion repairs done in home garages or marine shops
• Seasonal maintenance on Sea-Doo Sportster jet boats
• Replacing a noisy or slipping rotary shaft gear before it damages the shaft

Specs At A Glance

Good To Know

Q: Does this gear come as a single unit? A: Yes, this listing is for the rotary shaft gear described under the part number 290935736. Inspect the mating shaft and gear surfaces at the same time so worn parts are replaced together.

Q: How do I know it fits my pump? A: Match the OEM number on your existing gear along with your model and year before ordering. Fit can depend on your specific pump revision.

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