Specifications include, but are not limited to: A. Supply and deliver UD Cab and Chassis Trucks O.E.M parts, service, engine overhaul and warranty repairs on an as-needed basis. B. Parts: (1) All parts must be better than or equal to the original parts (2) Contractor shall use new O.E.M parts unless prior approval is granted by the City Fleet Management supervisor for alternate parts to be utilized. New parts shall be the latest model and of the best quality and highest grade workmanship. (3) Genuine Original Equipment Manufacturer (O.E.M) parts is defined in connection with the vehicle’s manufacturer meaning the manufacturer that designed and manufactured the parts, then distributed them by authorized divisions, subsidiaries or dealerships for that brand.