Detroit Genuine Parts for DD13, DD15 and DD16 engines, the power behind most Freightliner and Western Star trucks. We stock Detroit drive and accessory belts (A/C and serpentine/fan belts), water pumps, fuel and oil filters, fuel/water separators, gaskets, sensors and overhaul components. Factory-spec quality for dependable engine maintenance. In stock and shipped same day with Detroit part numbers — keep your DD-series running without dealer wait times.