Bronze/Copper Marine Tube-in-Shell Oil / Gear Cooler - Used

Application: Vintage marine tube-in-shell heat exchanger, suitable as a transmission gear oil cooler or engine oil cooler on classic inboard gas or diesel installations. Bronze end bonnets, copper shell, two side oil ports with brass plugs, top/bottom raw-water hose stubs, and a top boss for a zinc anode or vent. Cast numbers "359" and "398" visible; no OEM branding located. Condition: Used, take-off — exterior patina, light verdigris, and surface scaling consistent with age. Not pressure-tested; internal tube bundle condition unknown. Recommend pressure test / re-core before service. Drained and ports capped for shipping. 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.