50cc Complete Cylinder Head for 49 cc 4-stroke QMB139 engines with 8mm exhaust studs. An OEM Part For Wolf Brand Scooters 49cc Scooters. May also fit other ZNEN Chinese Scooters, ATVs, Mopeds, Etc.

About this item OEM Part For 49cc Wolf Brand Scooters Models Complete Cylinder Head for 49 cc 4-stroke QMB139 engines with 8mm exhaust studs Bolt Hole Spacing: 70.5 mm Intake Port Diameter: 17.5 mm Exhaust Port Diameter: 17 mm Emission System: PAIR (Pulsed Secondary Air Injection System) Intake and exhaust studs not included. Spark plug not included