Twin Disc MG-514 Marine Transmission Marine Gear - Used

Twin Disc MG-514 marine transmission (marine reduction gear), hand-tagged "MG 514 / Ratio 3.5:1" — model and ratio are from a shop tag only and have not been confirmed against a Twin Disc nameplate or build number. Case castings read A7075 and A618C (casting numbers, not orderable part numbers). Application: Twin Disc MG-series marine gear for inboard diesel propulsion; specific engine/vessel application is not verified. Configuration includes an SAE-style bell housing, side-mounted control valve body, external oil lines, and a bolted output companion flange. Condition: Used take-out, untested, offered as a rebuildable core. Surface rust on flanges and hardware, chipped/flaking paint, one side cover pad missing its plate, and a handwritten notation on the top cover that appears to reference the control valve and gear noise. Internals, ratio, and clutch/bearing condition are unknown. No run, pressure, or dyno testing has been performed and none is implied. Unit will be drained and ports capped before shipping; ships crated on a pallet and requires mechanical lifting. 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.