Freightliner FL70-FL80 Charge Air Coolers

Frequently Asked Questions About Freightliner FL70-FL80 Charge Air Coolers

What does a charge air cooler do on my FL70 or FL80?

A charge air cooler, also called an intercooler, cools the compressed air coming from the turbocharger before it enters the engine. Cooler, denser air improves combustion efficiency, helps the engine produce power more effectively, and reduces strain on internal components.

How do I know if my charge air cooler needs to be replaced?

Common signs of a failing charge air cooler include a noticeable loss of engine power, increased black smoke from the exhaust, higher fuel consumption, visible oil residue or leaks around the cooler fins or end tanks, and boost leak codes triggered by the engine control module. If you notice any of these symptoms, it is a good idea to have the cooler and surrounding hoses and clamps inspected.

Will a replacement charge air cooler fit my specific FL70 or FL80 model year?

Fitment can vary depending on engine option, cab configuration, and model year, so it is important to check the listed specifications and part numbers against your truck before ordering. If you are unsure, having your VIN or your existing cooler's part number on hand will help confirm a correct match before purchase.

Are these charge air coolers new, remanufactured, or used?

Availability depends on the specific listing, as charge air coolers in this category may be offered new, used, or reconditioned. Each product listing will specify the condition, so review that detail closely to make sure it fits your needs and budget.

What should I check when installing a new charge air cooler?

Along with mounting the cooler securely in its factory location, inspect all connecting hoses, clamps, and seals for wear or damage, since a failed hose or loose clamp is a common cause of boost leaks even after installing a new cooler. It is also a good practice to check the mounting brackets and surrounding components for damage that may have contributed to the original failure.