Komatsu PC200-8 PC210-8 Excavator Radiator 20Y-03-41110 Aftermarket Replacement

Product Specification

Product Overview

This aftermarket replacement radiator is designed for Komatsu PC200-8 and PC210-8 excavators, cross-referencing OEM part number 20Y-03-41110. The unit features a brazed aluminum core construction with 3-row configuration, providing cooling capacity matched to the original equipment specification for engines in the 110-125 kW output range.

Cause

Excavator radiators degrade over time through a combination of external and internal mechanisms. Externally, dust and particulate matter between 1-100 microns in size accumulate between cooling fins during normal construction site operation. When fin passage blockage exceeds 30 percent, airflow resistance increases significantly and the coolant-to-air temperature differential rises beyond design parameters. Internally, galvanic corrosion develops at junctions between dissimilar metals in the core when coolant inhibitors deplete below effective concentration levels, typically after 2,000-3,000 operating hours with conventional coolant formulations.

Solution

This aftermarket radiator provides a direct-fit replacement for the original Komatsu unit without modification to mounting brackets, hose connections, or fan shroud positioning. The brazed aluminum core uses controlled-atmosphere brazing (CAB) process to produce joints between tubes and fins that maintain structural integrity under vibration loads. All dimensions are verified against the OEM specification: core face width 720 mm, core face height 520 mm, core thickness 26 mm (3-row), inlet pipe outer diameter 38 mm, outlet pipe outer diameter 42 mm.

Specifications

Compatible Model: Komatsu PC200-8 / PC210-8
OEM Part Number: 20Y-03-41110
Core Material: Brazed Aluminum
Core Configuration: 3-Row
Core Dimensions: 720 mm (W) x 520 mm (H) x 26 mm (T)
Inlet Pipe OD: 38 mm
Outlet Pipe OD: 42 mm
Fin Density: 16 FPI (fins per inch)
Tube Wall Thickness: 0.4 mm
Operating Pressure: 0.9-1.1 bar

Application

Suitable for Komatsu PC200-8 and PC210-8 excavators used in standard excavation, trenching, loading, and general construction applications. The 3-row core configuration supports continuous operation in ambient temperatures up to 45°C, making it appropriate for heavy-duty work cycles including rock breaking and deep trenching in hard soil conditions.

How It Works

The radiator core transfers waste heat from the engine coolant to ambient air through convective heat exchange. Hot coolant from the engine enters through the inlet tank, flows through the aluminum tubes where heat conducts through the tube walls into the attached fins, and cooled air forced by the cooling fan carries the heat away. The cooled fluid exits through the outlet tank and returns to the engine block. The 3-row configuration provides three parallel planes of coolant flow, increasing the total heat exchange surface area compared to a 2-row design.

How To Choose

Verify your excavator model number and year of manufacture, locate the OEM part number on the existing radiator nameplate, measure the core dimensions of your current unit to confirm match, and check whether your machine has an integrated transmission oil cooler. If operating in ambient temperatures regularly exceeding 35°C, a 3-row configuration is recommended over a 2-row unit for adequate heat rejection capacity.

FAQ

Q: Does this radiator fit the PC200-7 model?
A: No. The PC200-7 uses a different radiator specification (part number 20Y-03-21510) with different core dimensions and inlet/outlet positioning.

Q: What coolant type is recommended?
A: Use a 50/50 blend of ethylene glycol and distilled water. Extended-life OAT coolant is recommended for service intervals of 6,000 hours or more.

Q: Is the transmission oil cooler included?
A: This unit does not include an integrated transmission oil cooler. If your machine requires one, please contact us for the appropriate variant.

Q: What is the warranty period?
A: 12 months or 2,000 operating hours, whichever comes first.