Aluminum Pump Adapter / Mounting Flange Marked 3912019 - Used

Machined aluminum pump / accessory-drive adapter mounting flange, marked 3912019. Application: not verified — the marking format is consistent with Cummins numbering and the flange style resembles adapters used to mount a gear-driven Sherwood-type raw water pump, but no OEM confirmation or data tag is present. Sold by photographs, markings, and dimensions. Condition: used take-off, untested. Surface scuffs, handling marks, and light oxidation; body, threads, and bore appear intact in photos but have not been gauged or test-fitted. No hardware, seals, gaskets, or pump included. We can provide measured bore, pilot, and bolt-spacing dimensions on request so you can compare to your engine before buying. 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.