Cummins Marine Flywheel Housing / Bellhousing for 5.9L 6BT / ISB - Used

Application: Cummins B-series marine / industrial diesel — 5.9L 6BT, ISB, and related QSB variants. Cast-aluminum SAE flywheel housing / bellhousing with integrated starter pocket and lower drive opening; sensor pigtail and coolant fitting present as shown. Condition: Used take-off, sold as-is. Exterior oxidation and surface corrosion consistent with age and service; no visible cracks noted in photos. Casting number not clearly legible — verify against your engine before ordering. 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.