GY6 6203 Bearing

GY6 6203 Bearing for 50cc to 150cc Scooters

The GY6 6203 Bearing suits a range of scooter engines, including the GY6 125cc, 150cc, and 139QMB 50cc models. This deep groove ball bearing plays a key role in keeping the engine running smoothly. It is one of the GY6 scooter parts you can swap out yourself at home. This part fits several scooter brands, so it works well for routine maintenance and repairs.

Compatibility Overview

This bearing is compatible with several scooter models, especially those with 2T horizontal Minarelli engines. It fits Genuine Buddy, Blur, Hooligan, and RoughHouse scooters, among others. If your engine identification includes "QM" or "FM" and uses an AC-powered CDI system, this bearing should be a match for your vehicle.

Replacement Considerations

Consider replacing the GY6 6203 Bearing when you notice excess wear, unusual noise, or a drop in engine performance. Routine inspections can catch these problems early and help prevent larger failures later. Keeping this component in good condition supports the overall health of your scooter.

Specifications

• Inner Diameter: 17mm
• Outer Diameter: 40mm
• Width: 12mm
• Number of Rollers: 8
• Fits: GY6 150cc (157QMJ), Genuine Buddy 50, CSC Bella Classic 50 and CSC Nitro Sport 50 engine cases

Fitment

Fits:

• GY6 150cc (157QMJ)
• Genuine Buddy 50
• CSC Bella Classic 50
• CSC Nitro Sport 50

How to choose: Check that the bearing's 17mm inner diameter, 40mm outer diameter, and 12mm width match the bearing you remove. It is a 6203 deep groove ball bearing.

Where it goes: part #15 on the transmission diagram for the GY6 150cc (157QMJ); part #9 on the transmission diagram for the Buddy 50; part #6 on the engine case diagram for the CSC Bella Classic 50.

Also offered: Genuine Scooter OEM Ball Bearing 6203, Deep Groove (Genuine Scooter OEM branding).

Shop more: GY6 Scooter Parts · Chinese Scooter Parts · Scooter Bearings · Scooter Parts