Radiator for International 4400 (2002-2005)

Heavy-Duty Aluminum Replacement Radiator for 2002-2005 International 4400 (Medium Duty DuraStar Platform)

What it Does: The replacement radiator restores full engine and transmission thermal regulation on the 2002-2005 International 4400 to prevent severe coolant loss and catastrophic cylinder head overheating under continuous load.

The Stock International 4400 Cooling System Degradation

Medium-duty commercial duty cycles subject the factory cooling package on the DuraStar Platform to severe thermal expansion cycles and constant frame torsion. Over time, the factory crimped joints between the core and tanks fatigue, leading to seam weeping, micro-fractures in aging composite side tanks, and internal tube clogging from mineral scale accumulation. This restricts laminar flow across the cooling passages, elevating coolant temperatures and reducing heat dissipation capacity from the Navistar DT466 / DT570 powertrain, which can quickly lead to blown head gaskets, liner cavitation, and transmission fluid thermal breakdown.

The Engineering Solution

Engineered for high-duty commercial operation, this cross-flow replacement radiator integrates an efficient 2-row core manufactured from premium T-6061 aluminum with high-density heat-transfer fins. The dual-row tube configuration optimizes surface area exposure to ensure rapid convective thermal transfer under sustained low-speed, high-load pulling conditions. Reinforced polymer tanks withstand elevated operating pressures, while the integral high-efficiency transmission oil cooler prevents fluid degradation without requiring auxiliary lines. Factory-located 2-1/4 inch inlet and outlet ports match original hose configurations, providing an exact drop-in replacement that meets OEM flow criteria.

What's Included

• 1 Aluminum 2-Row Radiator with Integrated Transmission Oil Cooler

Technical Specifications

Compatibility

• 2002-2005 International 4400 Medium-Duty Truck
• 2004-2007 Ford F-650 Commercial Truck
• 2004-2007 Ford F-750 Commercial Truck

Frequently Asked Questions & Fitment Warnings

Does this fit the DuraStar Platform 4400?

Yes, this is a direct fit for the 2002-2005 International 4400 equipped with the DT466 or DT570 engine, provided core dimensions match 20-1/2 in H x 25-5/8 in W x 2-1/4 in D.

Do I need to bleed the system after installation?

Yes, fully drain the cooling circuit, transfer all OEM sensors and brackets, refill with specified heavy-duty coolant, and completely bleed all air pockets prior to placing the vehicle into severe hauling service.

The International Hauling Standard

Engineered to handle severe GCWR commercial hauling, rigorous urban stop-and-go duty cycles, and prolonged idle times, this radiator is designed to ensure optimal thermal regulation to protect your commercial fleet powertrain investments.