Caterpillar 1777523 Heat Exchanger Tube Bundle Core for 3208 Marine Diesel - Used

Used Caterpillar 1777523 heat exchanger tube bundle / core for CAT 3208 marine diesel engines. Oval two-pass tubesheet with bolted mounting flange and full tube stack — sold as an untested take-off / rebuildable core with patina, verdigris, and surface corrosion typical of a pulled marine cooler. Recommend cleaning, rodding, and pressure testing before returning to service. 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.