Hitachi 4650353 Hydraulic Oil Cooler Assembly

The Hitachi 4650353 hydraulic oil cooler is an air-cooled heat exchanger designed to regulate hydraulic fluid temperature in medium-sized excavators. It utilizes an aluminum plate-fin core construction with TIG-welded joints for durability under high-pressure hydraulic circuits. The unit serves as a direct replacement for OEM coolers on Hitachi ZX200-3, ZX210-3, ZAX200-3, and ZAX210-3 models equipped with Isuzu 4HK1 diesel engines. It also cross-references to John Deere 225DLC and 220DW excavators using the same Isuzu powerplant. Core dimensions measure 960 mm x 500 mm x 70 mm with external dimensions of 1104 mm x 500 mm x 70 mm. The cooler operates at a maximum working pressure of 3.0 MPa and weighs approximately 30.25 kg.