Diesel Air Compressors

The engine-mounted air compressor supplies air to the brakes and other air systems on a heavy truck. A weak compressor causes slow air build-up, oil in the air lines and failed brake checks. A replacement keeps the truck safe and compliant.

Replacement Air Compressors

Internet Diesel stocks air compressors for heavy-duty diesel engines. Check each listing for engine fit and part numbers. Stock changes often, so call us if your model is not shown.

Before You Install

Check the air dryer and governor when you replace a compressor, since a bad dryer can damage a new unit. Drain the air tanks and inspect the lines for oil. For more engine work, see our overhaul kits and turbochargers.

Questions about fitment? Call 1-800-562-0360 or email sales@internetdiesel.com with your engine serial number. We ship nationwide from our Los Angeles warehouse at 4260 E. Washington Blvd. See our warranty policy or pay over time with Affirm.

Frequently Asked Questions

How do I know my compressor is failing?
Slow air build-up, oil in the air system and a noisy compressor are common signs.

Do you need my engine serial number?
Yes. It helps us match the right compressor and mounting for your engine.