This is a Brand New Starter for Mercedes Benz Med & Heavy Duty Trucks New Aftermarket Part (Not Rebuilt/Refurbished/Repurposed) Fits Mercedes Benz Med & Heavy Duty Trucks Unitog U-300 Fits Mercedes Benz Med & Heavy Duty Trucks Unitog U-400 Fits Mercedes Benz Med & Heavy Duty Trucks Unitog U-500 Please verify this is the right part number before ordering