Caterpillar 141-5974 Hydraulic Oil Cooler Assembly

The 141-5974 hydraulic oil cooler is an all-aluminum plate-fin heat exchanger designed as an exact OEM replacement for Caterpillar 325B, 325B L, and 325B LN hydraulic excavators equipped with the 3116 diesel engine. It manages hydraulic system oil temperature to maintain optimal viscosity and prevent thermal degradation of hydraulic components. Core construction features brazed aluminum plates and fins for high heat transfer efficiency. The unit mounts in the original equipment location with factory port and bracket configuration. Designed for continuous duty in construction and earthmoving applications with operating pressures up to 35 MPa.