Kenworth T300-T450 Charge Air Coolers

Frequently Asked Questions About Kenworth T300-T450 Charge Air Coolers

What does a charge air cooler do on my Kenworth T300-T450?

The charge air cooler, also called a CAC or intercooler, cools compressed air coming from the turbocharger before it enters the engine's intake manifold. Cooler, denser air improves combustion efficiency, boosts horsepower, and reduces strain on internal engine components.

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

Common warning signs include visible cracks or leaks along the fins or end tanks, oil residue around the cooler, a noticeable drop in power or fuel economy, excessive black smoke, or a boost leak code from your engine's diagnostic system. Physical damage from road debris is also a frequent cause of failure.

Will a replacement charge air cooler fit my specific Kenworth model year?

Charge air coolers can vary by model year, engine option, and cab configuration within the T300-T450 lineup. Always check the listed part number and fitment details against your truck's VIN or original equipment part number before ordering to confirm proper fit.

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

Product condition varies by listing, so be sure to review each product description carefully. Whether new, remanufactured, or used, we note the condition clearly so you know exactly what you're purchasing before checkout.

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

Inspect all mounting brackets, hoses, and clamps for wear or damage, and replace any that are cracked or brittle. After installation, it's good practice to perform a boost leak test to confirm all connections are sealed properly before returning the truck to regular service.