Detroit Diesel 71 Series Oil Cooler Housing - Used Core

Application: Detroit Diesel 71 Series inline engines (2-71, 3-71, 4-71, 6-71) — engine oil cooler housing / cover assembly. Condition: Used core with heavy external corrosion, coolant staining, and pitting on sealing surfaces; suitable as a rebuild core or fitment reference. Sold drained with ports capped. 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.