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Dual vacuum/EGR ports (2
A direct-fit replacement for most Chinese-manufactured scooters
This kit fits nearly all 4-stroke 50cc (QMB139 / GY6 50) scooter engines
Compatible with a wide range of Chinese-made scooter brands including Wolf
Counter Balance Countershaft: GY6 board Dual vacuum/EGR ports (2Countershaft on GY6 125 150cc engines. Original Parts For Scooters SKU 164 131 Specifications: Number of Teeth (large gear): 42 Number of Teeth (small gear): 13 Shaft Diameter: 15mm 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"
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