GY6 4-Stroke 50cc 139QMB Starter Clutch Gear for Scooter Tank Vip Jonway

Product Overview

This aftermarket replacement starter clutch gear is intended for GY6 4-stroke 50cc and 139QMB scooter applications, including listings associated with Tank, VIP, and Jonway. A starter clutch gear operates within the starting system, helping transfer starter motor drive to the engine so it can turn over and start. The component references the 139QMB engine designation supplied in the title.

Key Features & Performance

• Starter clutch gear for the GY6 4-stroke engine platform.
• Plays a role in transferring starter motor rotation to the engine during starting.
• Supplied with reference to the 139QMB engine designation listed in the title.
• Suited to the 50cc scooter applications indicated in the listing.
• Common replacement item when servicing a scooter starting system.

Fitment & Compatibility

• for GY6 4-stroke 50cc applications
• for 139QMB applications
• for Tank scooter applications
• for VIP scooter applications
• for Jonway scooter applications

Common Uses

• Replacing a worn or malfunctioning starter clutch gear.
• Servicing the starting system on the listed scooter applications.
• Restoring normal starter engagement during engine maintenance.

Technical Specifications

• Product Type: Starter Clutch Gear
• Model Application(s): GY6 4-stroke 50cc, 139QMB
• General Application: Scooter
• Reference Number(s): 139QMB

Frequently Asked Questions

Q: What is the function of a starter clutch gear? A: A starter clutch gear engages with the starter system to help transmit turning force to the engine during start-up, then allows the engine to run independently.

Q: How can fitment be confirmed? A: Check the complete existing part number and the full equipment model designation, such as 139QMB, against this listing before purchasing.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.