Yanmar Marine Heat Exchanger / Exhaust Manifold Cooler Assembly for 4-Cylinder JH Series Diesel - Used Core

Yanmar marine heat exchanger / exhaust manifold cooler assembly, removed from a 4-cylinder Yanmar diesel. Cast aluminum body with the YANMAR logo cast into the side, four exhaust port flanges, four intake openings, integral raw-water tube nest, and pressure cap.

Application: Not verified. The configuration is consistent with the Yanmar 4JH family of 4-cylinder marine diesels, but no legible part number or data label remains on the unit, so the exact model application has not been confirmed. Buyer must verify against their engine model and serial number.

Condition: Used, untested take-out sold as a rebuildable core. The end cover is missing and the raw-water tube nest is exposed. Expect heavy surface oxidation, salt/verdigris staining around the tube sheet and flange faces, and corroded studs/spigots. No pressure test or flow test has been performed; internal tube condition is unknown. No end caps, gaskets, zincs, or hardware are included beyond what is pictured. Recommended for professional cleaning, inspection, and pressure testing before service.

Drained and capped for shipment.

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.