GY6 150cc (157QMJ) 125/150cc Valve Cover Gasket OEM

Valve Cover Gasket for GY6 125cc, 150cc, and 169cc Engines

This valve cover gasket is made for GY6 157QMJ engine families, covering 125cc, 150cc, and 169cc versions. It is an OEM-spec replacement that creates a secure seal between the cylinder head cover and the engine. By sealing that joint, it helps stop oil from escaping, which supports consistent engine operation. It is one of the GY6 150cc scooter parts that drops in place without any cutting or alteration.

Construction and Fit

This gasket uses an O-ring profile molded from hard-wearing rubber. The shape keeps the seal tight, which lowers the chance of leaks. Being an OEM replacement, it sits exactly where the original did, so it can be installed without difficulty on compatible engines.

When to Replace

Replace the gasket if you see oil seeping around the valve cover or if it shows visible wear or damage. Checking it regularly can catch problems before they grow into larger engine issues. Fitting a new gasket brings back a proper seal and helps your engine run efficiently.

Specifications

• Material: Rubber (O-ring profile)
• Engine Family: 157QMJ / GY6 125–169cc
• OEM Part Number: 1100-1057
• Fits: GY6 157QMJ-family engines, 125cc, 150cc and 169cc (cylinder head cover)

Fitment

Fits:

• GY6 150cc (157QMJ) (157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A and other QMJ, QMK, QMI variants)
• GY6 125cc and 169cc engines of the same 157QMJ family

How to choose: Compare the engine code stamped on your engine with the list above, or go by the 125-169cc GY6 family size, and confirm the O-ring profile matches the gasket you are replacing.

Where it goes: part #2 on the cylinder head cover diagram for the GY6 150cc (157QMJ).

Shop more: GY6 150cc Scooter Parts (157QMJ) · GY6 Scooter Parts · Scooter Cylinder Heads & Valves · Scooter Gaskets & Seals · Scooter Parts