International | Navistar

At American Radiator, we understand how critical a reliable International/Navistar radiator is to keeping your truck fleet on the road. That’s why we stock a large inventory of heavy-duty radiators engineered for popular models like the International ProStar, 4300, 8600, and LT series. Whether you’re looking for a direct-fit OEM replacement radiator or a heavy-duty aftermarket upgrade, every unit is built to deliver maximum cooling efficiency and long service life under demanding conditions.

Our International truck radiators come with a two-year, unlimited mileage warranty, while many severe-duty bar and plate designs include a lifetime warranty, proving our commitment to quality. Each radiator is designed with precision brazed cores, reinforced tanks, and heavy-duty construction to handle the toughest applications, from long-haul trucking to vocational use.

As Navistar radiator specialists, we not only provide wholesale pricing but also back it with expert technical support and charge air cooler and oil cooler repair services. If you don’t see the exact radiator for your International/Navistar truck, our specialists are just a call away at 877-203-4572. Trust American Radiator—your nationwide source for heavy-duty cooling solutions that combine performance, value, and same-day shipping.