Marine Transmission Helical Gear and Shaft Assembly - Used Take-Out

Application: Marine transmission internal helical gear and shaft assembly, most likely Twin Disc MG-series (visual match to P8377A / P8367A style helical gear & shaft) pulled from a shop working on Detroit Diesel power. Includes large helical gear, integral pinion, and splined output shaft. Condition: Used take-out with surface rust; not tested. Suitable for rebuild or core. 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.