Detroit Diesel 5158800 Oil Pump Assembly for 6-71 Series - Used

Used Detroit Diesel oil pump assembly, cast P/N 5158800, for 71-series diesel engines (6-71 / 4-71 family — marine, industrial, and truck applications). Complete gear-driven pump with drive gear, idler, pressure relief, and mounting flange. Ideal as a rebuildable core or as a serviceable replacement after inspection and testing. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.