Frequently Asked Questions About Peterbilt 387 Radiators

What years and engine configurations will these radiators fit my Peterbilt 387?

Our Peterbilt 387 radiators are designed to fit model years 2000-2010. Compatibility depends on your specific engine type - we carry radiators for Caterpillar C12, C13, and C15 engines, as well as Cummins ISX models. Always verify your engine serial number and radiator part number before ordering. If you're unsure, our team can help confirm fitment with your VIN number.

Are these all-aluminum radiators, and how do they compare to OEM copper/brass units?

We offer both all-aluminum and traditional copper/brass radiators. Our aluminum radiators feature 2-row cores with 1.5-inch tubes and provide excellent cooling efficiency while weighing 40-50% less than copper/brass units. They're corrosion-resistant and typically outlast OEM specs. Copper/brass options are available for those who prefer traditional construction or need to match existing cooling system components.

What's involved in the installation process, and will I need special tools?

Installation typically takes 3-4 hours for experienced mechanics. You'll need basic hand tools, coolant drain equipment, and potentially a hoist for easier access. Most radiators are direct bolt-in replacements, but some models may require transferring mounting brackets from your old unit. Common challenges include disconnecting transmission cooler lines and ensuring proper fitment of upper and lower hoses. We recommend having new hose clamps and coolant ready before starting.

Do these radiators come with the side tanks and oil cooler already attached?

Most of our Peterbilt 387 radiators come as complete assemblies with plastic or aluminum side tanks pre-installed. However, transmission oil coolers are typically sold separately unless specifically noted as "with cooler" models. Charge air coolers (CAC) are also separate components. Check the product description carefully - some budget options may require transferring your existing tanks and coolers.

What kind of warranty coverage do these radiators have, and what voids it?

Our radiators typically carry a 1-2 year manufacturer warranty against defects in materials and workmanship. Warranty coverage requires proper installation, use of recommended coolant mixtures (50/50 antifreeze), and regular maintenance. Common warranty exclusions include damage from overheating due to other component failures, contaminated coolant, physical damage from road debris, and modifications to the radiator. Keep your receipt and follow the break-in procedure of checking coolant levels after the first few heat cycles.