Cast Aluminum Thermostat / Water Outlet Housing - Marine Diesel - Used

Application: Cast aluminum thermostat / water outlet or coolant housing from a marine diesel engine (brand and exact engine model not confirmed; partial cast number reads approximately 5107770-M). Two-bolt end flanges, side hose outlet, and small threaded boss. Condition: Used take-off, sold as a core / as-is. Heavy oxidation and paint wear; no cracks visible but not pressure tested. 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.