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 exact specifications of the compressor brand. Aftermarket parts are made by third parties to fit the same application. For compressors still under warranty, OEM parts are essential — using aftermarket components can void your coverage. For out-of-warranty machines, a quality aftermarket part can be a cost-effective alternative, but verify compatibility carefully. Our guide to aftermarket vs. OEM compressor oil covers the same principle as it applies to lubricants.

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.

Finding Parts for Legacy and Discontinued Compressors

Older compressors can be challenging. Parts for discontinued models are sometimes available through specialty distributors who maintain legacy inventory, or through authorized dealer networks. A1 Compressor Warehouse has experience sourcing hard-to-find parts for legacy Mattei compressors and other discontinued models. If you're stuck, reach out — even if we don't stock it, we can often track it down.

Why Buy from A1 Compressor Warehouse?

As a certified distributor for Mattei, Anest Iwata, Schulz, EL-AV, and Atlas Copco, we carry genuine OEM parts and can verify compatibility before you order. Most quotes are turned around within 24 hours, and we ship quickly to minimize your downtime. If you're also weighing whether to repair or replace your existing unit, our Charlotte compressor service cost guide gives honest benchmarks to help you decide. Contact us with your model number and what you need — we'll take it from there.