Frequently Asked Questions About Freightliner FLC120 Radiators

What year models of FLC120 trucks will these radiators fit?

Our FLC120 radiators are designed to fit models from 1989 through 2003. However, there are variations between early models (1989-1996) and later models (1997-2003) due to mounting bracket changes. Always verify your truck's specific year and check the radiator part number or dimensions before ordering. If you're unsure, contact us with your VIN number and we can help confirm compatibility.

Are these radiators made from aluminum or plastic, and which is better for my truck?

We carry both aluminum core radiators with plastic tanks and all-aluminum options. Aluminum core with plastic tank radiators are more affordable and work well for standard applications. All-aluminum radiators offer better heat dissipation and durability, especially for heavy-duty applications or trucks running in extreme conditions. For most FLC120 drivers, the aluminum/plastic combination provides excellent performance at a reasonable price point.

Do I need any special tools or additional parts for installation?

Basic hand tools are typically sufficient for installation, including socket wrenches, pliers, and screwdrivers. You'll likely need new coolant (approximately 12-15 gallons for a complete system refill) and we recommend replacing the upper and lower radiator hoses during installation. Some installations may require new mounting bushings or brackets if the originals are worn. The job usually takes 2-4 hours depending on your experience level.

What's the difference between 2-row and 3-row radiators, and which do I need?

The row count refers to the number of coolant tubes running through the radiator core. 2-row radiators are standard for most FLC120 applications and provide adequate cooling for typical loads and conditions. 3-row radiators offer approximately 30% more cooling capacity and are recommended for trucks pulling heavy loads, operating in mountainous terrain, or running in consistently hot climates. Check your current radiator or consult your owner's manual to match the original specification.

How can I tell if my radiator is failing before it completely breaks down?

Common warning signs include gradual coolant loss without visible leaks, engine temperature creeping higher than normal, rust-colored coolant, white residue around the tank seams, or pinhole leaks that appear as small wet spots after the engine cools. If you notice any green or orange staining on the radiator fins or smell sweet coolant odor while driving, inspect your radiator immediately. Regular pressure testing during maintenance can catch problems early.