This starter clutch assembly is compatible with E-Ton ATV models EXL150, Viper150R, RXL150R (2005–2011), Yukon150, YXL150 (2000–2002), Yukon II 150, CXL150 (2002–2011), Beamer R4, Matrix, ATV Sport 150 (2004–2005), ATV 150 (2004–2005), ATV Crossroad 150 (2005), ATV Crossover 150 (2005), and ATV Crossover Boost 150 (2007).It replaces part numbers B812A-A04-0000 (Outer Starting Clutch Assembly) and B8110-A04-0000 (Starting Clutch Gear Component).Constructed from aluminum, this one-way starter clutch assembly supports power transmission to the fuel supply system and helps manage reverse resistance during engine.Proper function of this component contributes to engine starting and overall system performance.Regular maintenance helps sustain operational efficiency.