Blue Line Rocker Arm Assembly (Type 2, 69mm); 139QMB
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This rocker arm assembly is for Type-2 139QMB engines that use a 69mm length valve stem and a taller head (Type-1 engines have a shorter head and 64mm length valve stem). Original Parts For Scooters SKU 151-282 Specifications: Height: 26mm For use with 69mm valves Compatibility: Â 139QMB-based 50cc / 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA-2 YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB BN139QMB 147QMD Other QMA models Other QMB models Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle. About Blue Line: About Blue Line: Blue Line offers OEM equivalent replacement parts for on-road scooters. Blue Line parts are a direct-fit replacement when OEM parts are unavailable or overly expensive for your scooter. Since 2018, Blue Line has provided quality parts at great prices.
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