Kaeser Filter & Separator Part Numbers: Reading the Dotted Format (6.1966.0 / 619660)
Kaeser rotary screw compressors are common in shops and plants that want quiet, efficient air. When a filter or separator is due, the swap itself is straightforward. What slows people down is the Kaeser air filter part number — and how often it shows up with dots that site search and purchase orders strip out.
This guide explains Kaeser’s dotted part-number format, how to read the same number in every common writing, and how to order the matching KELTEC OEM equivalent from Compressor Filter Hub.
Why Kaeser Part Numbers Are Confusing
Most Kaeser filter and separator numbers look like 6.1966.0: a leading digit, a four-digit middle block, and a trailing revision digit, separated by periods. That dotted format is how Kaeser prints many numbers in manuals and on labels.
The problem is that the dots are formatting, not part of the identity of the part. The same element gets written as:
- Dotted — 6.1966.0 (manual / label style)
- Plain — 619660 (typed into a search bar or PO)
- Spaced — 6 1966 0
- Dashed — 6-1966-0 (common on distributor sites and our product tags)
All four are the same part. If you search only one format and get zero results, try the others — or use the direct links in the table below. Some Kaeser numbers also use letters (for example 4E0302.0) or a letter-dash oil code (S-460-05). Keep the letters; they are part of the number.
| Format | Example | Where you see it |
|---|---|---|
| Dotted | 6.1966.0 | Kaeser manuals, parts lists, many element labels |
| Plain | 619660 | Purchase orders, typed site searches, some invoices |
| Spaced | 6 1966 0 | Handwritten notes, some paperwork |
| Dashed | 6-1966-0 | Distributor sites, tags, search synonyms |
Where to Find the Part Number on Your Compressor
Before you order, get the number for the exact element in your machine:
- The old element itself. Most air filters, oil filters, and separators carry a printed or stamped number. Photograph it before you pull it.
- The parts list in your Kaeser manual. Service parts are listed by the dotted number for that model and serial range.
- Your last service invoice or PM kit. The numbers are usually on the paperwork, sometimes already converted to plain digits.
- The nameplate. Write down the model and serial number. If you can’t find a part number anywhere else, that’s what we need to look it up for you.
The number on the old element is the safest starting point. If it doesn’t match your manual, send us both and we’ll sort it out. We do not guess compressor model fitment from a nameplate alone without confirming the element number.
Popular Kaeser Filters, Separators, and Oil We Stock
These are Kaeser part numbers our customers order often, including the air filter pre-wrap 893199.0 and the dotted air element 6.1966.0. Each link goes to the KELTEC OEM equivalent product page, where the OEM number and KELTEC number sit side by side.
| Kaeser Part # | Also Written As | KELTEC Equivalent # | Part Type | Shop |
|---|---|---|---|---|
| 6.1966.0 | 619660 6 1966 0 6-1966-0 |
KC325-008 | Air filter | View 6.1966.0 |
| 6.0221.0 | 602210 6 0221 0 6-0221-0 |
KC405-019 | Air filter | View 6.0221.0 |
| 4E0302.0 | 4E03020 4E0302 0 |
KC850-034P | Air filter with pre-wrap | View 4E0302.0 |
| 893199.0 | 893199 8931990 |
PF082165 | Air filter pre-wrap | View 893199.0 |
| 6.1947.0 | 619470 6 1947 0 6-1947-0 |
KV200-015 | Air/oil separator | View 6.1947.0 |
| 6.0703.0 | 607030 6 0703 0 6-0703-0 |
KL105-021 | Oil filter | View 6.0703.0 |
| S-460-05 | S46005 S 460 05 |
KOA467C-05 | Compressor oil (5 gal) | View S-460-05 |
Don’t see yours? We carry hundreds of KELTEC OEM equivalent Kaeser products. Browse the full Kaeser filters & separators collection, or check our air/oil separators and compressor oil sections.
Tips for Searching a Dotted Kaeser Number
- Start with the number exactly as printed on the element, including the dots.
- If search comes up empty, strip the dots and try the plain form (6.1966.0 → 619660).
- Keep letter prefixes and suffixes. 4E0302.0 is not the same as 40302.0.
- Oil codes like S-460-05 keep the letters and dashes as written on the pail or invoice.
- When in doubt, email us the number and a photo. Matching from a clear label is faster than guessing formats.
Change Air, Oil, and Separator on One Schedule
On an oil-flooded rotary screw compressor, the intake filter, oil filter, and air/oil separator work as a system. A clogged intake filter loads everything downstream, and a worn separator lets oil carry over into your air lines. Many shops replace the set at one service so there’s one downtime window and one order.
For typical intervals, see our guide on how often to replace intake, oil, and separator filters. If you’re seeing oil in the air lines, our walkthrough on replacing the air/oil separator covers the swap, and our post on how KELTEC Technolab parts support Kaeser and other brands explains OEM-equivalent quality.
Frequently Asked Questions
Is 6.1966.0 the same as 619660?
Yes. The dots are formatting. 6.1966.0, 619660, 6 1966 0, and 6-1966-0 all identify the same Kaeser air filter element.
Why does site search miss my Kaeser number?
Search often needs an exact string match. If the store title uses the dotted form and you typed the plain form (or the reverse), it can return nothing even when the part is in stock. Try both formats, or use the links in the table above.
What is a KELTEC OEM equivalent?
KELTEC Technolab builds replacement filters and separators to match the fit, form, and function of the original part. Every product page lists the Kaeser OEM number it replaces and the matching KELTEC number. For more, read OEM vs OEM equivalent filters.
I only know my compressor model. Can you find the part?
Yes. Send us the model, serial number, and a photo of the old element if you have it, and we’ll match it for you.
Get the Right Kaeser Part the First Time
Have your part number? Click it in the table above or browse our Kaeser filters & separators. Every order ships free.
Can’t find your number? Email info@compressorfilterhub.com or contact us with your compressor model, serial number, and the number off your old element (or a photo of it). We’ll match it and send you a link to order.