Diesel Engine Coolant Thermostat / Regulator - Used

Application: Used cartridge-style coolant thermostat / regulator for a heavy-duty diesel engine — construction matches Caterpillar C-series (247-7133 / 248-5513 family) and Cummins (3092114 family) coolant regulators. Condition: Used take-off, visually intact with light oxidation and coolant staining; O-ring seal in place; not bench-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.