Description
Clutch Retaining Nut for GY6 and 139QMB Engines
The clutch retaining nut is an important component that holds the rear clutch assembly to the pulley shaft on GY6 and 139QMB scooter engines. This part fits various configurations, including 50cc, 125cc, and 150cc models. It is one of the key GY6 50cc scooter parts that ensures proper function and reliability when maintaining your scooter's drivetrain.
When to Replace Your Clutch Retaining Nut
Consider replacing the clutch retaining nut if you are experiencing issues with the rear clutch or if you are disassembling the pulley. Over time, these nuts can wear or become damaged, leading to potential clutch disengagement. Regular inspection during maintenance can prevent unnecessary complications.
Installation Requirements
To install the clutch retaining nut properly, a 39mm socket is required, and an impact tool is recommended for best results. This ensures secure fastening for reliable performance. Make sure to follow proper torque specifications for your specific engine model to avoid over-tightening or stripping the nut.
Specifications
- MPN: 623A19
- Thread Size: M28 x 4mm pitch
- Engine: GY6 50cc / 125cc / 150cc, 139QMB 49cc / 50cc
- Application: Driven pulley / clutch assembly
- Required Tool: 39mm socket (impact recommended)
- Made in: Taiwan
Fitment
This clutch retaining nut is compatible with GY6 50cc, 125cc, and 150cc engines, as well as the 139QMB 49cc and 50cc engines. It is suitable for a wide variety of scooters manufactured in China and Taiwan.
- GY6 50cc (QMI152)
- GY6 125cc (QMJ157)
- 139QMB 49cc
- 139QMB 50cc
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Clutches & Clutch Springs · Scooter Bolts, Screws & Hardware · Scooter Parts
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