GY6 125/150cc Scooter 9-Spline Starter Motor

9-Spline Starter Motor for GY6 125/150cc Scooters

This starter motor with 9 splines is built for GY6 125cc and 150cc engines and turns over reliably on scooters, ATVs, and go-karts. The housing is zinc-plated, which helps it hold up against rust. An O-ring seals the nose, keeping oil in and dirt out of the engine. It's one of the GY6 150cc scooter parts designed to get your vehicle starting quickly and smoothly. Confirm the engine code matches before ordering.

Rust-Resistant Housing

The zinc plating on the housing guards against corrosion over time. The O-ring at the nose blocks oil from leaking out and stops dirt from getting in, both of which help the motor keep working consistently. Two ears on the body bolt into the factory mounting position using two bolts, so installation is simple.

Compatibility and Fit

This motor works with several GY6 engines, covering both the 125cc and 150cc versions. Check the spline count and bolt spacing before fitting it. The power lead comes already attached with a boot, so hooking it up to the starter relay wire is quick.

Specifications

• Spline Count: 9
• Bolt Hole Spacing: 79mm
• Motor Diameter: 60mm
• Nose Diameter: 30mm
• Overall Length: 120mm
• Engine: GY6 125cc / 150cc 4-stroke
• Fits: GY6 150cc (157QMJ) 4-stroke engines, with the 9-spline starter

Fitment

Fits:

• GY6 150cc (157QMJ, 1P57QMJ, JJ157QMJ)
• GY6 150cc big-bore (161QMK)
• GY6 125cc (152QMI, 1P52QMI)

How to choose: Read the engine code stamped on the engine case and compare it with 157QMJ, 1P57QMJ, JJ157QMJ, 161QMK, 152QMI, or 1P52QMI. Count 9 splines on the starter gear and confirm the bolt spacing is 79mm.

Where it goes: part #5 on the starter diagram for the GY6 150cc (157QMJ).

Other versions: For a performance option covering other engines, see the High Torque Starter Motor GY6 150-232cc Performance.

Shop more: GY6 150cc Scooter Parts (157QMJ) · GY6 Scooter Parts · Scooter Starters & Relays · Electric Scooter Hub Motors & Controllers · Scooter Parts