Radiator for International 3800 4700 4900 (1994-2001)

Heavy-Duty Direct-Fit Radiator for 1994-2001 International 3800,4700,4900 (4000 Series)

What it Does: The Heavy-Duty Direct-Fit Radiator replaces leaking, restricted factory cooling units on 1994-2001 International 3800, 4700, and 4900 commercial chassis to restore optimal heat dissipation and prevent thermal derating under heavy loads.

The Stock International 3800,4700,4900 Thermal Fatigue and Seam Failure

Factory radiators on the 4000 Series commercial platform endure intense thermal cycling, engine vibration, and frame torsional flex when paired with the DT466E diesel platform. Over extensive duty cycles, original crimped tanks and composite joints develop stress fractures, resulting in chronic coolant loss. Concurrently, internal scale accumulation and debris restriction in the tubes degrade heat transfer, leading to elevated coolant temperatures, fan clutch over-engagement, and severe risk of engine overheat during highway hauling.

The Engineering Solution

Built to factory dimensions with an integrated mounting framework, this aluminum replacement core optimizes thermal conductivity across 31-1/2 in by 31-1/2 in dimensions. Engineered without an internal transmission oil cooler, it provides direct coolant flow through high-efficiency tubes and corrugated cooling fins. Designed with a standard 2-1/2 in upper right inlet and a 2-1/2 in lower right outlet oriented upward, this unit restores OEM flow dynamics. It directly interchanges with OE part numbers 1697273C1, 3503905C92, and 1A17359 without bracket or plumbing alterations.

What's Included

• 1x Aluminum Radiator with Integrated Mounting Frame

Technical Specifications

Compatibility

• 1994-2001 International 3800
• 1994-2001 International 4700
• 1994-2001 International 4700LP
• 1994-2001 International 4900
• 1988 International 2375 S
• 1997 International 8100

Frequently Asked Questions & Fitment Warnings

Does this fit the 4000 Series 3800, 4700, and 4900?

Yes, this is a direct fit for the 1994-2001 International 3800, 4700, and 4900 equipped with the DT466E engine. This model features the lower right outlet pointing upward; it does NOT fit configurations requiring a straight right-side outlet or an upward left-side outlet.

Do I need to bleed the cooling system during installation?

Yes, drain the circuit completely, transfer original sensors and fittings, refill with approved heavy-duty coolant, and bleed all air pockets prior to putting the vehicle back in service.

The International Fleet Standard

Engineered for commercial-grade uptime and persistent towing demands, this aluminum replacement core withstands continuous thermal loads to keep your medium-duty fleet operating at peak mechanical reliability.