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Keep your 139QMB engine running smoothly with this OEM two-valve rocker arm assembly from Blue Line Designed specifically for Type 1 engines with 64mm valve stems and a shorter cylinder head
Available in multiple stiffness ratings (indicated by color)
Fitment Tip: To confirm you have a Series A engine
SKU: 1200-1030
526mm W x 4
Intake Valve (OEM, 150cc) GY6 parts Keep your 139QMB engine runningIntake valve for GY6 150cc engines. Original Parts For Scooters SKU 164 178 Specifications: Valve Diameter: 27. 75mm Length: 66mm Compatibility: 157QMJ based 125cc 150cc 169cc engines with the following engine codes: 157QMJ 161QMK 152QMI 1P61QMK YN1P57QMJ 1P52FMI 154FMI JJ157QMJ 1P57QMJ BN157QMJ BN161QMK A Other QMJ, QMK, and QMI models Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your
