Doosan DH220-5 DH225-7 Excavator Radiator DX225LC Aftermarket Replacement

Product Specification

Product Overview

This aftermarket replacement radiator serves Doosan DH220-5, DH225-7, and DX225LC excavators. The unit features a 3-row brazed aluminum core designed to match the original cooling capacity specification for engines in the 115-130 kW output range, providing a cost-effective alternative to OEM replacement parts.

Cause

Doosan excavators commonly operate in harsh environments including mining support work, aggregate handling, and demolition where fine particulate matter, concrete dust, and rock particles rapidly contaminate the cooling fin stack. In these conditions, the standard fin spacing of 16 FPI becomes a liability as dust accumulates between fins at an accelerated rate. Combined with the tendency of operators to use tap water rather than distilled water for coolant top-ups, internal scale deposits form on tube walls, progressively reducing the heat transfer coefficient and requiring earlier radiator replacement than in cleaner operating environments.

Solution

This aftermarket radiator provides OEM-equivalent cooling performance at a reduced cost. The brazed aluminum core is manufactured using controlled-atmosphere brazing for joint durability, with tube wall thickness of 0.4 mm and fin density of 16 FPI matching the Doosan original specification. All mounting bracket positions, bolt hole patterns, and pipe connection dimensions are verified against the factory design to ensure direct-fit installation without modification.

Specifications

Compatible Model: Doosan DH220-5 / DH225-7 / DX225LC
Core Material: Brazed Aluminum
Core Configuration: 3-Row
Core Dimensions: 720 mm (W) x 530 mm (H) x 26 mm (T)
Inlet Pipe OD: 38 mm
Outlet Pipe OD: 42 mm
Fin Density: 16 FPI
Tube Wall Thickness: 0.4 mm
Operating Pressure: 0.9-1.1 bar

Application

Suitable for Doosan DH220-5, DH225-7, and DX225LC excavators in aggregate processing, demolition, general construction, and material handling. The 3-row configuration supports operation in ambient temperatures up to 40°C. For machines operating above this temperature threshold or with continuous high-load cycles, a 4-row variant may be recommended.

How It Works

The radiator functions as the primary heat rejection component in the engine cooling system. Hot coolant from the Doosan engine enters through the inlet pipe and distributes across three rows of aluminum tubes within the core. Heat transfers through the tube walls to the attached fins, and airflow generated by the engine-driven cooling fan carries the heat away to ambient air. The cooled fluid returns through the outlet pipe to the engine, maintaining operating temperature within design parameters.

How To Choose

Verify your Doosan excavator model, confirm the OEM part number on the existing radiator nameplate, and measure core dimensions to ensure match. If your machine has a transmission oil cooler mounted in front of the radiator, ensure the replacement unit is compatible with this configuration. For dusty operating environments, plan for more frequent external fin cleaning at 100-150 hour intervals rather than the standard 250 hours.

FAQ

Q: Does this fit the DH220-7 model?
A: Yes. The DH220-7 and DH225-7 share the same radiator specification as the DH220-5.

Q: Can I install this without replacing the hoses?
A: If your existing hoses are in good condition with no cracks or softening, they can be reused with new clamps.

Q: What coolant concentration is recommended?
A: 50/50 ethylene glycol and distilled water for ambient temperatures between minus 30°C and 45°C.