420834488 Starter Gear for Sea-Doo Challenger SE 510 1503 2010-2011

Starter Gear for Sea-Doo

This starter gear for Sea-Doo, part number 420834488, engages the starter motor to turn over the 1503 engine on Challenger SE 510 models from 2010 to 2011, delivering consistent cranking power every time you start up.

Overview

This starter gear for Sea-Doo is a direct-fit replacement component that transfers turning force from the starter motor to the engine flywheel. Designed for the 1503 engine found in Challenger SE 510 models, it restores dependable starting performance on the water. It is made for riders and mechanics who need a durable, correctly sized gear that meshes cleanly and lasts season after season.

Built For Performance

• Precision-cut gear teeth for smooth, quiet engagement with the flywheel
• Constructed from hardened steel for resistance to wear under repeated cranking
• Engineered to match the 420834488 specification for reliable fit
• Balanced design reduces vibration during starter operation
• Corrosion-resistant finish suited to marine environments
• Direct replacement for the original starter gear on the 1503 engine

Fits These Machines

• for Sea-Doo Challenger SE 510 (2010-2011)

On-The-Job Use

• Rebuilding a starter drive that has worn or stripped teeth
• Restoring reliable cold starts on the water
• Routine maintenance on 1503-powered Sea-Doo watercraft
• Shop and DIY repair work where a correct-fit gear is required

Specs At A Glance

Good To Know

Q: Will this gear fit my Challenger SE 510? A: It is intended for the 1503 engine in the 2010-2011 Sea-Doo Challenger SE 510 and matches part number 420834488. Always confirm your serial number and part number before ordering.

Q: Do I need to replace the whole starter? A: If only the gear teeth are worn or damaged, replacing just this starter gear can be the practical fix. Inspect the starter motor and flywheel for wear at the same time.

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