Omega Air OKA 177 E-E/M, direct aftermarket replacement. This filter is an aftermarket in-line filter designed as a direct replacement for filters from Atlas Copco, Hankison, HiFi Filter, Kaeser, Mann-Filter, Noitech, Omega Air, Oxfil, and Sotras. It uses borosilicate micro glass fibre media with a 0.1 µm filtration rating to capture fine particulates and oil aerosols. With a total height of 665 mm, an outer diameter of 82.5 mm, and a smallest inner diameter of 57 mm, this filter fits a range of compressed air systems. It operates effectively at temperatures from 1.5 °C to 65 °C and has a low differential pressure of 50 mbar. As an aftermarket alternative, it offers reliable performance at a competitive price.
Technical properties & cross references
Specifications
| Differential Pressure |
50 mbar |
| Filtration Media |
Borosilicate micro glass fibre 0.1 µm |
| Media type |
Borosilicate micro glass fibre |
| Filtration Rating |
0.1 µm |
| Total Height |
665 mm (26 3/16") |
| Maximum Working Temperature |
65°C (149°F) |
| Minimum Working temperature |
1.5°C (35°F) |
| Smallest Inner Diameter |
57 mm (2 1/4") |
| Outer Diameter |
82.5 mm (3 1/4") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| The Air Market |
USD 129.48 |
13 Oct 2026 |
| Oxfil |
USD 170.36 |
16 Oct 2026 |
| FilterFinder Online |
USD 316.00 |
13 Oct 2026 |
| Spare Part Mart |
USD 103.59 |
Today |
Our price of USD 103.59 is 20% to 67% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
High-Dust Industrial Environments
In workshops or factories with high airborne dust levels, the 0.1 µm borosilicate micro glass fibre media captures fine particles that could clog downstream equipment. This filter helps maintain consistent air quality and extends the life of valves and actuators.
Continuous-Duty Compressor Systems
For compressors running 24/7, the low 50 mbar differential pressure minimizes energy loss while ensuring effective filtration. This reduces strain on the compressor and lowers operating costs over long run times.
Temperature-Sensitive Applications
In environments with fluctuating temperatures, such as outdoor installations, the filter's operating range of 1.5 °C to 65 °C ensures reliable performance. It prevents condensation issues in cooler conditions and withstands heat near compressors.
Inventory Consolidation for Mixed Fleets
Facilities using equipment from Atlas Copco and Kaeser can standardize on this single filter element. This simplifies stock management and reduces the risk of installing the wrong filter during maintenance.
Frequently asked questions
How do I confirm this filter fits my specific compressor model?
Check your compressor's manual for the original filter part number and compare it to the cross-referenced brands listed: Atlas Copco, Hankison, HiFi Filter, Kaeser, Mann-Filter, Noitech, Omega Air, Oxfil, or Sotras. If your part number matches one of these, this filter is a direct replacement.
What is the filtration rating and media type?
The filter uses borosilicate micro glass fibre media with a filtration rating of 0.1 µm. This rating captures fine particulates and oil aerosols effectively.
What are the key dimensions and how do I ensure proper fit?
The filter has a total height of 665 mm, an outer diameter of 82.5 mm, and a smallest inner diameter of 57 mm. Measure your existing filter's dimensions and thread type to confirm compatibility.
Is this an OEM or genuine filter? How does it compare to the branded version?
This is an aftermarket filter, not OEM or genuine. It is built to the original dimensions and ratings and serves as a direct replacement. It offers comparable performance at a lower cost.
How do I install and replace this filter?
Depressurize the system and remove the old filter. Install the new filter by hand-tightening it into the housing. Ensure the gasket seals properly. Refer to your equipment's manual for specific torque or replacement intervals.