Detroit Diesel Oil Cooler Housing Cover for 53 / 71 Series Engine - Used Core

Used Detroit Diesel oil cooler housing cover, believed to fit 53 / 71 Series two-stroke marine and industrial diesel engines. Heavy cast iron casting with cast-in part number (partially legible in photos). Offered as a core / as-is casting with visible corrosion, verdigris, and gasket-surface pitting — suitable for rebuild, pattern reference, or core exchange. 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.