Please check the year, make, model and engine size. Thank you. Specifications and Features: *Amperage 150 *Rotation CW *6 Groove Pulley Compatible Vehicles: Mercedes Cl500 V8 5.0L 1999-2001 S430 V8 4.3L 2000-2001 S500 V8 5.0L 2000-2001 0 123 520 017