Caterpillar 185-8981 Radiator Core Assembly

The 185-8981 radiator core assembly is engineered as a direct replacement for Caterpillar 311B and 312B hydraulic excavators equipped with the 3064 diesel engine. This unit functions as a combined radiator and hydraulic oil cooler core, managing thermal loads for both engine coolant and hydraulic circuits under heavy workloads. Constructed with aluminum core and plastic tanks, the core dimensions measure 22.5 inches (571.5 mm) height by 24.5 inches (622.3 mm) width by 2 inches (50.8 mm) thickness, featuring top-left inlet and bottom-right outlet configuration. The assembly weighs approximately 22 kg (48.5 lbs). Verification of serial number and original part number is required prior to installation due to potential variations across production batches.