Frequently Asked Questions About Freightliner FL70-FL80 Radiators

Will these radiators fit my specific FL70 or FL80 model year?

Our FL70-FL80 radiators are designed to fit models from 1994 through 2007. However, exact fitment depends on your engine type (Caterpillar 3126, Cummins ISB, or Mercedes MBE900) and whether you have a manual or automatic transmission. Always verify your radiator's core size and inlet/outlet positions before ordering. The most common core sizes are 24" x 25" and 27" x 25". Check your VIN or existing radiator part number to ensure compatibility.

What's the difference between aluminum and plastic tank radiators for my FL70/FL80?

Aluminum tank radiators typically last longer and handle higher pressures better than plastic tank versions. While plastic tank radiators are usually less expensive upfront, they're prone to cracking at the tank-to-core crimps after 5-7 years. Aluminum radiators cost about 20-30% more but often outlast plastic versions by several years. For heavy-duty applications or hot climates, we recommend aluminum tanks for better heat dissipation and durability.

Can I install a new FL70/FL80 radiator myself, or do I need special tools?

Most FL70/FL80 radiator replacements can be completed with basic hand tools in 2-3 hours. You'll need a socket set, screwdrivers, pliers for hose clamps, and a drain pan. The main challenges are accessing the lower radiator hose (easier with the truck on ramps) and properly bleeding air from the cooling system afterward. Make sure to transfer your overflow tank fitting and test the fan clutch operation before installation. Professional installation typically runs $200-400 if you prefer to have it done.

How many rows should my replacement radiator have?

The number of rows depends on your engine and application. Most FL70/FL80 trucks came with 2-row radiators from the factory, which work fine for standard highway use. If you're hauling heavy loads, operating in mountainous terrain, or running in hot climates, consider upgrading to a 3-row or 4-row radiator for additional cooling capacity. Note that more rows aren't always better - proper airflow and clean fins are equally important for cooling efficiency.

Why are some FL70/FL80 radiators significantly cheaper than others?

Price differences usually reflect construction quality and warranty coverage. Budget radiators often use thinner core materials, lower-grade aluminum, and may have inconsistent welding. Premium radiators feature thicker cores, reinforced mounting brackets, and better quality control. While a $300 radiator might work fine for light-duty use, spending $500-700 on a heavy-duty model makes sense if you're logging serious miles. Always check warranty terms - reputable manufacturers offer at least 1-2 years coverage.