This magneto cylinder / stator housing applies to (and is not limited to) 150cc to 400cc engines. Most commonly used for 260cc and 300cc ATVs, dirt bikes, scooters, buggies and other motorized vehicles from a wide range of manufacturers. Manufacturer Part Numbers: Xingyue: 127004030020 Inner Diameter (ID): 94.9mm Outer Diameter (OD): 118.3mm Overall Height: 49.8mm Center Hole Mount (Tapered): 24.6/20mm Mounting Holes (center - center) (Side by Side): 75mm Mounting Holes (center - center) (Across): 37mm Mounting Holes: 9mm