Polaris SPORTSMAN 450 499cc ATV Starter Motor｜12V 1.2kW 9T CW｜OE 4018940

This replacement starter motor suits the Polaris SPORTSMAN 450 499cc ATV, cross-referenced to OE 4018940. It carries a rating of 12V, 1.2kW and comes with a 9-tooth clockwise rotation gear.

Many ATV owners deal with recurring starter faults from rough trail use. Those problems include sluggish cranking, random no-start events, slipping drive gears and burnt internal coils. Tightly packed copper windings and heavy-duty magnets hold steady cranking torque each time you engage the starter. Its sturdy die-cast aluminum housing and upgraded sealing barriers block mud, splashing water and fine trail dust. This simple protection helps stretch the motor’s working lifespan.

We run practical checks on every finished unit before shipment. Our team verifies rotation direction, gear measurements, mounting layout and electrical output. It matches your factory bolt holes and terminal positions exactly. You can swap out the old unit directly, and no custom drilling or wiring adjustments are needed.

This starter fits well for private ATV riders and local repair garages alike. It brings back solid, consistent starting performance at a reasonable cost. It also lowers the risk of unplanned shutdowns while you are out riding. Take a moment to verify your original starter’s OE number, engine size and rotation direction before placing your order.