Quincy Separator & Filter Part Numbers: Lookup Guide (144606-01, QU027585 and More)

Quincy rotary screw compressors are known for running a long time, but the separator, air filter, oil filter, and line filters still come due. When they do, the part number is the fastest way to the right replacement. The catch with Quincy is the suffix: 124487-01 and 124487-001 look almost the same, but they’re different separators with different KELTEC equivalents.

This guide shows how Quincy separator and filter part numbers are written, which details you can’t skip, where to find your number, and how to order the matching KELTEC OEM equivalent from Compressor Filter Hub.

How Quincy Part Numbers Are Written

Quincy uses several formats, sometimes on the same compressor:

• Six digits plus a dash suffix: 144606-01, 124487-001, 123353-050, 145548-001. This is the most common format for separators and filters.
• Six digits plus a letter code: 125420E400, 110377E100. The letter and the three digits after it are part of the number.
• Ten-digit numbers: 2013400001, 2013400092. Some are written with dashes, like 1625-4302-91, which is the same part as 1625430291.
• QU numbers: QU027585 and similar, used for line filter elements. Keep the QU and the leading zero.
• Media codes: some oil filters list (CEL) for cellulose or (SYN) for synthetic after the number, as in 121015-1 (CEL) and 121015-1 (SYN).

The Suffix Matters More Than You Think

With Quincy, a suffix is never optional. On our product pages these near-matches all point to different KELTEC elements:

• 124487-01 (KELTEC CEQ818A) vs. 124487-001 (KELTEC KV230-003)
• 122117-1 (KELTEC KV230-002) vs. 122117-10 (KELTEC KV80-001)
• 123353-050 (KELTEC KC1150-005) vs. 123353-052 (KELTEC KC175-018)
• 121015-1 (CEL) (KELTEC 05-1032) vs. 121015-1 (SYN) (KELTEC 37-2857)

So copy every digit, zero, and letter exactly as it’s printed. If an invoice or spreadsheet shows a shorter number than the label on your old part, trust the label.

Where to Find the Part Number on Your Quincy Compressor

1. The old element. Separators, air filters, spin-on oil filters, and line filter elements usually have the number on the label, end cap, or can. Take a photo before you throw it out.
2. Your service manual or parts list. The maintenance parts page lists the separator, air filter, and oil filter for your model.
3. Past invoices. Useful, but check for dropped suffixes or zeros.
4. The nameplate. If the old part is unreadable, send us the model and serial number from the compressor nameplate and we’ll help you find the right part number.

Popular Quincy Air/Oil Separators We Stock

Each link goes to the KELTEC OEM equivalent product page, where the Quincy number and the KELTEC number are listed together.

Need a different number? Browse all Quincy air/oil separators.

Popular Quincy Air Filters, Oil Filters, and Line Filters

More Quincy parts are in our Quincy filters and separators collection and Quincy coalescing filters, plus our full air intake filters and oil filters collections.

Tips for Searching a Quincy Number

• Search the full number with its suffix first (144606-01, 125420E400).
• If the dashed version comes up empty, try it without the dash (14460601), or the other way around.
• For ten-digit numbers, try both 1625430291 and 1625-4302-91.
• Check the part type in the product title. Quincy sells separators, air filters, oil filters, and line filters, and you want the one that matches your old part.
• Searching by model (QGS, QSI, QT and so on) won’t bring up a part. Send us the model and serial number instead and we’ll look it up.

Change the Separator, Oil Filter, and Air Filter Together

On an oil-flooded rotary screw compressor, the air filter keeps dust out, the oil filter keeps the oil clean, and the separator keeps that oil out of your air system. When one is overdue, the others work harder, so many shops replace all three at the same service. See when and how often to replace compressor filters, and if you’re seeing oil downstream, read how to tell if oil in your air lines is the separator. Ready to do the job? Follow our guide to replacing the air/oil separator element.

Changing the line filters too? Our coalescing filter element cross reference covers element numbers from the major filtration brands.

Frequently Asked Questions

Are Quincy 124487-01 and 124487-001 the same separator?
No. They’re listed as separate parts with different KELTEC equivalents (CEQ818A and KV230-003). Order the exact suffix printed on your old separator.

What’s the difference between 121015-1 (CEL) and 121015-1 (SYN)?
CEL is cellulose media and SYN is synthetic media, and each has its own KELTEC equivalent. Match the media code on your current filter, or ask us if the label doesn’t show one.

What is a KELTEC OEM equivalent?
KELTEC Technolab builds replacement elements to match the fit, form, and function of the original part. Every product page lists the OEM number it replaces and the matching KELTEC number. For more, read OEM vs OEM equivalent filters.

I only know my Quincy model. Can you help?
Yes. Send us the model and serial number from the nameplate, plus photos of the old parts if you have them, and we’ll find the right separator and filters.

Get the Right Quincy Part the First Time

Have your part number? Click it in the tables above or browse our Quincy filters and separators.

Can’t find your number? Email info@compressorfilterhub.com or contact us with your compressor model and the number off your old part (or a photo of it). We’ll match it and send you a link to order.