Valve seal for 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines This valve seal is used on a wide variety of scooters and ATV brands and models that have Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines Description Valve seal for 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines. This valve seal is used on a wide variety of scooters and ATV brands and models that have Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines. Please check the dimensions on the Specs tab to see if this is the correct valve seal for your Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engine.,Specifications Diameter: 10 mm Height: 8 mm