Freightliner FLC120 Radiators

Frequently Asked Questions About Freightliner FLC120 Radiators

Will this radiator fit my Freightliner FLC120 without modifications?

Radiators for the FLC120 are designed to match the factory fitment for this model, but core size, mounting tab placement, and inlet/outlet configuration can vary depending on the engine option and model year of your truck. Always check the specifications listed on the product page against your truck's build sheet or existing radiator before ordering to ensure a direct fit.

What material is the radiator core made from, and does it affect cooling performance?

Most replacement radiators for the FLC120 are available with either an aluminum core or a copper/brass core, each paired with different tank materials such as plastic or metal. Aluminum cores tend to be lighter and resist corrosion well, while copper/brass cores are often praised for heat transfer and durability under heavy-duty use. The right choice usually depends on your truck's typical operating conditions and your budget.

How difficult is it to install a replacement radiator on an FLC120?

Installation typically involves draining the coolant system, disconnecting hoses and mounting hardware, removing the fan shroud if needed, and swapping in the new radiator before refilling and bleeding the cooling system. While experienced techs can often complete this in a few hours, we recommend having the proper tools on hand and following a service manual specific to your engine configuration, since hose routing and bracket placement can differ between years.

How do I know if my old radiator needs to be replaced versus repaired?

Common signs that point to replacement rather than repair include visible cracks in the tanks, corrosion or pinhole leaks in the core, bent or crushed fins that restrict airflow, or recurring overheating issues even after a flush and inspection of the cap, thermostat, and fan clutch. If leaks or damage are isolated to a small area, a repair shop may be able to fix it, but widespread corrosion or core damage usually means replacement is the more reliable long-term option.

Do these radiators come with a warranty, and what does it typically cover?

Warranty coverage varies by manufacturer and specific product, so it's important to check the details listed on each individual product page before purchasing. In general, most radiator warranties cover defects in materials or workmanship for a set period but do not cover damage from improper installation, road debris, or lack of maintenance, so proper installation and regular coolant system upkeep are important for keeping any warranty valid.