183-8119 Upper Radiator Hose for Caterpillar 320C E320C

183-8119 Upper Radiator Hose for Caterpillar 320C E320C

The 183-8119 upper radiator hose (also referenced as 1838119 or upper water hose) is a molded cooling system hose designed for Caterpillar 320C series excavators, frequently referred to in the aftermarket as E320C. Installed at the top of the radiator cooling circuit, it channels hot coolant from the Caterpillar 3066 engine outlet housing to the upper radiator tank for temperature regulation.

Engineered with a 49 mm (1.93 in) inner diameter to match original equipment routing, this fixed-length hose is molded from compounded synthetic EPDM rubber. It is rated for operating temperatures from -40°C to 125°C (-40°F to 257°F) and a working pressure of 172.37 kPa (25 psi), providing reliable resistance against thermal degradation, ozone cracking, and coolant chemicals.

Product Specifications

Compatible Excavator Models

Caterpillar 320C (E320C) | Caterpillar 320C L

The 183-8119 upper radiator hose fits Caterpillar 320C and 320C L excavators powered by the 6-cylinder Cat 3066 diesel engine. In the 320C radiator water lines group, this upper hose pairs with the corresponding lower radiator hose (183-8120). Because cooling hose arrangements can vary by machine serial number prefix, please verify your original part number before ordering.

Replacement Upper Coolant Hose

Topvelsun supplies 183-8119 upper radiator hoses for excavator cooling system repair and scheduled maintenance. Replacing aged, swollen, or leaking upper radiator hoses restores dependable coolant circulation and helps protect the 3066 engine against overheating during heavy excavation work.

For quotation and fitment verification, please provide part number 183-8119 together with your excavator model, machine serial number, and required quantity.