Model Compatibility: Fits excavator models EX120-3 and EX120-1 as a direct replacement for upper and lower radiator hoses.Functionality: Restores cooling system hose function for the specified excavator models without modification.Design Purpose: Matches the form, fit, and function of the radiator hoses originally installed on EX120-3 and EX120-1 units.Application Scope: Intended solely for use as a replacement upper and lower radiator hose on compatible EX120 series excavators.Installation Requirement: Designed to install in the same location and orientation as the upper and lower radiator hoses on EX120-3 and EX120-1., Manufacturer: HDKFSUJ