GY6 Long Case CVT Transmission Cover Gasket

GY6 Long Case CVT Transmission Cover Gasket for 125cc and 150cc Scooters

This CVT transmission cover gasket is made for GY6 long-case engines, specifically the 125cc and 150cc scooter variants. It serves as an OEM-equivalent replacement that creates a proper seal for the transmission cover. It belongs to the GY6 scooter parts range and plays an important role in keeping the engine running as it should. Its accurate cutouts and secure bolt pattern provide dependable fit and function.

Construction and Design

The gasket has two round openings for the CVT drum and a central rectangular cutout that follows the contour of the engine case. A notch in one corner helps it sit snugly. The 10-bolt outer pattern provides full sealing coverage, helping to prevent leaks and keep the transmission system sealed.

Compatibility

This gasket is intended for a range of 125cc and 150cc engines, particularly those built on the 157QMJ engine code. It can also replace several other engine codes that contain "QMJ" or "FM," so it suits a number of different scooter models.

Specifications

• Length: 17-7/8"
• Width: 6.5" (at largest end, including bolt hole span)
• Bolt holes: 10
• Position: Left side transmission/CVT cover
• Engine application: GY6 125cc / 150cc (long case)
• OEM Part Number: 157QMJ
• Fits: GY6 150cc (157QMJ) long case CVT, left side transmission cover, 12" or 13" wheel scooters

Fitment

Fits:

• GY6 150cc (157QMJ) (long case, 12" or 13" wheel scooters)

Where it goes: part #4 on the lh crankcase cover diagram for the GY6 150cc (157QMJ).

Other versions: For a short case engine, see the GY6 Short Case CVT Engine Cover Gasket.

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