Description

25301-5H401 Radiator Compatibility

25301-5H401 Radiator Hyundai County & HD-Series Truck (D4 Diesel Series)

The 25301-5H401 RADIATOR is specifically engineered for commercial applications. Built with a reinforced core and high-thermal-transfer aluminum to withstand the extreme duty cycles of passenger buses and light-to-medium trucks, it is a direct-fit replacement for the County Bus and HD72. Browse our commercial cooling systems catalog or explore our selection of Hyundai D4 diesel components to complete your 25301-5H401 replacement.

Hyundai Bus & Truck

  • Hyundai County: 1998–2006 (Bus)
  • Hyundai HD65: Light-Duty Truck
  • Hyundai HD72: Medium-Duty Truck
  • Engine: D4DB / D4AF / D4AL Diesel

Kia & Regional Platforms

  • Kia Combi: Regional Bus Platform
  • Design: High-Capacity Passages
  • Quality: Reinforced Heavy-Duty Tanks

Part Number Reference: 25301-5H401 (Interchangeable: 25301-5H400, 25301-5H402)

Commercial radiators vary based on turbocharged vs. naturally aspirated specs and regional tropical-spec cooling cores. Please verify your hose diameters and bracket offsets using your VIN to ensure a perfect fit.


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Note: Images are for illustration. Visit our FAQ page for support.

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Questions and Answers

Why do commercial vehicles like the Hyundai County and HD72 require specialized heavy-duty radiators?
Commercial vehicles operate under continuous heavy loads, frequent stop-and-go conditions, and extended idle times. Heavy-duty radiators feature increased core thickness, reinforced tanks, and higher fin densities to prevent engine overheating under grueling service schedules.
What is the difference between part numbers 25301-5H400, 25301-5H401, and 25301-5H402?
These part numbers represent successive factory updates or variations tailored for specific market configurations (such as standard cooling versus heavy tropical-duty variants) used across the D4 diesel truck and bus lines.
How do I verify the correct radiator for my commercial fleet vehicle?
Because commercial chassis often have custom body builds or unique engine tuning variants, we strongly recommend sending your chassis number (VIN) through our WhatsApp link to ensure accurate bracket and hose alignment before ordering.

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