Radiator for International 4300 (2012-2013)

Heavy-Duty Direct Replacement Radiator for 2012-2013 International 4300 (DuraStar)

What it Does: The replacement radiator restores closed-loop thermal heat rejection and integrated fluid cooling on the 2012-2013 International 4300 to stop coolant loss and prevent catastrophic engine overheating under sustained commercial loads.

The Stock International 4300 Thermal Fatigue and Seam Failure

Medium-duty vocational fleets subject the DuraStar chassis to severe heat-cycle expansion, frame torsion, and high system pressures. Over time, the factory radiator's crimped core-to-header plate gaskets degrade, while continuous heat soak embrittles the factory glass-filled nylon end tanks. This structural fatigue yields microscopic stress fractures, fin oxidation, internal tube clogging, and coolant leakage under high-torque delivery routes powered by the MaxxForce DT.

The Engineering Solution

Engineered to exact OEM envelope dimensions, this heavy-duty drop-in unit features an efficient 36-5/8" x 28-3/4" x 2-1/4" furnace-brazed aluminum core paired with reinforced composite plastic tanks. The internal tube geometry optimizes coolant flow velocity to shed heat rapidly, while the built-in transmission oil cooler stabilizes hydraulic operating temperatures under heavy towing. Each completed unit undergoes factory pressure decay testing to help ensure leak-free containment at elevated operating pressures. Designed as a direct drop-in replacement matching OE reference 2602925C92.

What's Included

• 1x Complete Heavy-Duty Replacement Radiator with Integrated Internal Oil Cooler

Technical Specifications

Compatibility

• 2012 International DuraStar 4300 (Medium Duty / Vocational / Delivery)
• 2013 International DuraStar 4300 (Medium Duty / Vocational / Delivery)

Frequently Asked Questions & Fitment Warnings

Does this fit the DuraStar 4300?

Yes, this is a direct fit for 2012-2013 International 4300 models equipped with the MaxxForce DT engine matching the listed OEM numbers; trucks with differing core dimensions or configurations without an internal oil cooler are excluded.

Do I need to bleed the cooling system after replacement?

Yes, technicians must vacuum-fill or fully bleed air pockets from the engine cooling block and heater core to prevent airlocks and thermal hot spots.

The International Commercial Standard

Built for the punishing demands of severe-service hauling and inner-city delivery, this cooling assembly maintains structural rigidity, handles sustained fluid thermal spikes, and prevents costly fleet downtime.