Radiator for International 3300 (2005-2007)

Heavy-Duty 2-Row Replacement Radiator for 2005-2007 International 3300 (3300 Cowl Chassis)

What it Does: The 2-row aluminum replacement radiator replaces compromised factory heat exchangers on the 2005-2007 International 3300 to restore critical cooling capacity and eliminate fleet downtime caused by coolant loss and thermal overload.

The Stock International 3300 Cooling Failures

Medium-duty fleets operating the International 3300 subject their cooling systems to heavy thermal cycling and continuous chassis vibration during daily transport cycles. The factory radiator header crimps fatigue over time, causing coolant seepage and pressure drops at the plastic-to-aluminum transition seams. Furthermore, internal passage clogging and fin degradation choke off heat dissipation, causing rapid heat soak in the VT365 diesel platform under high-load operating conditions.

The Engineering Solution

This direct replacement cooling assembly features a dual-row T-6061 aluminum cross-flow core engineered for high-volume heat transfer. The core utilizes brazed tube-and-fin construction mated to thermal-shock-resistant reinforced composite tanks. An integrated internal transmission oil cooler stabilizes automatic transmission fluid temperatures without external line routing. Factory-matched 2-1/4 inch inlet and outlet ports, OEM-spec bracket locations, and interchange cross-compatibility with OE number 2504903C91 deliver a seamless drop-in fitment.

What's Included

• 1x Complete 2-Row Aluminum Core Radiator with Reinforced Plastic Tanks and Integrated Transmission Oil Cooler

Technical Specifications

Compatibility

• 2005-2007 International 3300
• 2004-2007 Ford F-650
• 2004-2007 Ford F-750

Frequently Asked Questions & Fitment Warnings

Does this fit the 3300 Cowl Chassis 3300?

Yes, this is a direct fit for the 2005-2007 International 3300 equipped with the VT365 engine. Always verify your existing core measurements (20-1/2" H x 25-5/8" W x 2-1/4" D) and hose neck layout prior to installation.

Do I need to bleed the cooling circuit during installation?

Yes, after draining the circuit and transferring sensors, you must refill with the specified heavy-duty coolant mix and completely bleed all trapped air pockets to prevent hot-spot damage.

The International Heavy-Duty Standard

Commercial transit chassis require dependable thermal stability under severe stop-and-go duty cycles, ensuring continuous route reliability and heavy payload endurance.