Marine Diesel Heat Exchanger Shell / Core Housing - Used Take-Off

Application: Used marine diesel engine heat exchanger shell / core housing, suitable as a rebuild core or replacement housing for a small-to-medium marine diesel (visually consistent with Cummins 6BT/6BTA 5.9 and similar). Condition: Used take-off, sold as-is with heavy exterior oxidation and paint loss; internal tubes not verified. 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.