Joy Separator & Filter Part Numbers: Lookup Guide (1122350, 506424-018 and More)

Joy rotary screw compressors are still running in plants and shops across North America, even though the brand is older and harder to find parts for. The fastest way to the right replacement separator, air filter, or oil filter is still the part number on the old element. The catch is that Joy wrote the same number more than one way — with leading zeros, with or without a dash, and with a short or padded suffix — so a search can come up empty if you only try one format.

This guide shows how Joy compressor separator and filter part numbers are written, which formats to try, and how to order the matching KELTEC OEM equivalent from Compressor Filter Hub.

How Joy Part Numbers Are Written

Joy used several formats. You may see more than one on the same machine:

• Seven plain digits: 1122350, 1222490, 1224101, 1404987. Type every digit.
• Seven digits with a dash and a short suffix: 506424-018, 514183-7, 514183-11, 3606500-12. The suffix after the dash is part of the number — 506424-018 and 506424-022 are different separators.
• Six digits with a padded four-digit suffix: 543117-0001, 543117-0011. Manuals and labels also show the short form (543117-1, 543117-11). On our product pages, those pairs list the same KELTEC equivalent.
• Leading-zero variants: 1800010-08 and 1800108 both appear for the same oil filter. Keep the zeros when they’re on the old part; if a search fails, try the other form.
• P-prefix numbers: P1404040-00053, P1401435-00233. Keep the P and the full dash suffix.
• Letter suffixes: 39080R2. Keep the letter with the digits.

Different Joy Numbers, Same KELTEC Element

Joy (and later paperwork) often lists more than one number for the same element. On our product pages, these pairs share one KELTEC equivalent:

• 1122350 and 1223496 separators (both KELTEC KD170-006)
• 1223484 and 514183-7 separators (both KELTEC KD600-014)
• 506424-018 and 506424-077 separators (both KELTEC KV150-019)
• 543117-0001 and 543117-1 (both KELTEC KV28-001); 543117-0011 and 543117-11 (both KELTEC KV480-003)
• 1800010-08, 1800108, and 701701-321 oil filters (all KELTEC KL1200-026)
• 1224101 and 1224104 oil filters (both KELTEC KL440-010)
• 0243211 and 0266800 air filters (both KELTEC KA90-012); 1222490 and 1222940 (both KELTEC KA135-010)

Search the number on your old part first, then check the KELTEC number on the product page. If two listings look like the same Joy number but show different KELTEC numbers — especially Joy vs Joy-Sullivan — contact us before you order.

Popular Joy Air/Oil Separators

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

Popular Joy Air Filters

Popular Joy Oil Filters

Need a different number? Browse all air/oil separators, air intake filters, oil filters, and coalescing filters, or search your number in the store search bar.

Where to Find the Part Number on Your Joy Compressor

1. The old element. Separators, air filters, and oil filters 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. Watch for padded vs short suffixes (543117-0001 vs 543117-1).
3. Past invoices. Useful, but watch for dropped zeros (1800010-08 vs 1800108) or a missing dash.
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.

Tips for Searching a Joy Part Number

• Search the full number first, with its dashes (506424-018, 543117-0001, P1404040-00053).
• If that comes up empty, try it without dashes or spaces (506424018, 5431170001), then try the short suffix form (543117-1).
• For leading-zero oil numbers, try both 1800010-08 and 1800108.
• Keep a P-prefix or letter suffix exactly as written.
• Check the part type in the product title. A separator, air filter, and oil filter are different parts even when the digit strings look similar.
• Searching by model 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. For line filters, our coalescing filter element cross reference covers the major filtration brands, and you can browse all coalescing filters.

Frequently Asked Questions

Are Joy 1122350 and 1223496 the same separator?
On our product pages, both list KELTEC KD170-006 as the equivalent. If you have either number, you can order from that page. If you’re unsure, send us a photo of the old part.

Does it matter if I type 543117-0001 or 543117-1?
For those two listings, both show KELTEC KV28-001. The same pattern holds for 543117-0011 / 543117-11 (both KV480-003). Don’t assume every short and padded pair matches — some look-alike numbers (including Joy-Sullivan listings) show different KELTEC numbers, so check the product page or contact us.

Are 1800010-08 and 1800108 the same oil filter?
Yes on our site — both list KELTEC KL1200-026, and so does 701701-321. Try each format if site search misses the first 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 Joy compressor 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 Joy Part the First Time

Have your part number? Click it in the tables above or search it in our store.

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.