Frequently Asked Questions About International ProStar Radiators

What years and models of International ProStar are these radiators compatible with?

Our International ProStar radiators are designed to fit model years 2008-2017. However, compatibility can vary based on engine type (Cummins ISX, MaxxForce, or Caterpillar) and whether your truck has specific cooling packages. Always verify your truck's VIN and engine serial number before ordering. Most radiators will indicate specific engine compatibility in the product description, but if you're unsure, our customer service team can help verify fitment using your truck's specifications.

Are these aluminum or plastic tank radiators, and which is better for my ProStar?

We carry both aluminum core radiators with plastic tanks and all-aluminum options. Plastic tank radiators are typically more affordable and work well for standard applications, lasting 5-7 years with proper maintenance. All-aluminum radiators offer superior heat dissipation and durability, especially beneficial for heavy-haul applications or extreme climate conditions. They're also repairable if damaged, unlike plastic tanks which must be replaced entirely. Consider your driving conditions and budget when choosing between the two.

How difficult is it to install a ProStar radiator, and what tools do I need?

Radiator replacement on a ProStar typically takes 3-4 hours for experienced mechanics. You'll need basic hand tools, including socket sets (10mm-19mm), screwdrivers, pliers, and drain pans. The main challenges include properly draining and refilling the cooling system, disconnecting transmission cooler lines without damage, and ensuring proper fitment of mounting brackets. Many drivers report the upper mounting brackets can be tricky to align. We recommend having new coolant, hose clamps, and potentially new hoses on hand as older hoses may crack during removal.

What's the difference between OEM and aftermarket ProStar radiators in terms of quality and longevity?

OEM radiators typically match original specifications exactly and often last 7-10 years. Quality aftermarket radiators from reputable manufacturers can perform equally well at 30-50% less cost, usually lasting 5-8 years. Key differences to look for include core thickness (2-row vs 3-row), fin density, and warranty coverage. Avoid extremely cheap options as they often use thinner materials and poor welding that can fail prematurely. Look for radiators with at least a 1-year warranty and check if they meet or exceed OEM cooling capacity ratings.

My ProStar runs hot even with a new radiator - what else should I check?

A new radiator alone may not solve overheating issues. Common related problems include clogged or damaged charge air coolers (CACs) blocking airflow, worn water pumps not circulating coolant properly, faulty thermostats, or degraded fan clutches not engaging correctly. Also check for air pockets in the cooling system after installation, as ProStars can be difficult to bleed properly. Ensure your radiator cap holds proper pressure (typically 15-16 PSI) and inspect all coolant hoses for soft spots or internal deterioration that could restrict flow.