The Ultimate Guide to Finding and Purchasing Air Compressor Parts Online

Finding and purchasing air compressor parts online has never been easier — but with thousands of listings across dozens of platforms, it can also be overwhelming. Whether you're a seasoned maintenance professional or a first-time buyer, this guide will help you find the right part, from the right source, at the right price.

Start with Your Compressor's Model and Serial Number

Before searching for anything, locate your compressor's model number and serial number. These are typically found on a data plate on the compressor body or motor housing. With these in hand, you can find the correct part numbers in the OEM parts manual — or simply provide them to a supplier like A1 Compressor Warehouse and let us look it up for you. Guessing at parts based on descriptions alone is the fastest way to end up with the wrong item.

OEM vs. Aftermarket Parts: What's the Difference?

OEM (Original Equipment Manufacturer) parts are made by or to the compressor brand’s specifications. Aftermarket parts are made by third parties to fit the same application. For a compressor under warranty, use the parts and lubricants the manufacturer specifies, check its terms before using aftermarket components, and document maintenance. Manufacturer warranties generally exclude non-OEM consumables; we can confirm coverage for your exact product. For an out-of-warranty machine, a quality aftermarket part can be cost effective, but verify compatibility. Our guide to aftermarket vs. OEM compressor oil covers the lubricant choice in more detail.

What Parts Are Most Commonly Needed?

The most frequently purchased compressor maintenance items are:

• Oil and oil filters — required at every scheduled PM interval
• Air/inlet filters — protect the compression element from dust and debris
• Separator elements — remove oil carryover from compressed air on rotary screw units
• Belts — on belt-driven piston and some rotary screw models
• Tip seals — critical wear parts on scroll compressors like those from Anest Iwata
• Check valves and solenoids — common repair items when a compressor won't load or hold pressure

Many manufacturers bundle these into Maintenance Kits at a discount. Even if your unit doesn't need every item in the kit, the bundled price often beats buying each part individually. If your compressor is not building pressure, start with our guide to what to check before you call before you order parts.

Finding Parts for Legacy and Discontinued Compressors

Older compressors can be challenging. Parts for discontinued models may be available through the manufacturer or specialist suppliers. We have experience with hard-to-find parts for legacy Mattei compressors and legacy Atlas Copco mobile equipment. If you are stuck, reach out and we will check availability through the manufacturer and our supplier network.

Why Buy from A1 Compressor Warehouse?

As an authorized distributor for Mattei, Anest Iwata, Schulz, EL-AV and Atlas Copco, we can check part compatibility before you order. Same-day quotes on parts requests received before 3 PM ET. If you are weighing repair against replacement, our Charlotte compressor service cost guide gives benchmarks to discuss. Contact us with your model number and what you need.