Cummins 3919856 Aftercooler End Cap Water Connection for B/C Series Marine Engines - Used

Cummins bronze aftercooler housing end cap with angled water connection, cast part number 3919856. Known application: Cummins B-series and C-series marine aftercooler housings — the exact donor engine and serial are not verified, so this is offered as a possible application only.

Condition: used, untested take-off. Bronze casting with surface oxidation, light verdigris, scuffs, and old sealant residue on the sealing flange. No cracks or repairs visible in the photographs, but the casting has not been pressure tested or crack tested. Gasket, plug, and hardware are not included. Cover only — no aftercooler core or housing.

Cast foundry markings 30524-1027 and ANW appear inside the cover; these are mold/casting identifiers, not orderable part numbers.

Item will be drained and ports capped before shipping.

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.