Air-Tec SP120040, direct aftermarket replacement. This separator is a high-quality aftermarket separator designed as a direct replacement for a wide range of brands including Air-Tec, Atlas Copco, Fai Filtri, HiFi Filter, Mann-Filter, Noitech, Oxfil, SF Filter, Sotras, and T.G. Filter. With a body height of 261 mm, an outer diameter of 166 mm, and a largest outer diameter of 299 mm, this separator is built to the original dimensions and ratings. Weighing 3.04 kg, it is suitable for use in Atlas Copco compressors, specifically the GA 55, GA 45 PLUS, GA 37 PLUS, GA 55 VSD, GA 45 VSD, GA 37 VSD, and GA 30 PLUS models from specified serial numbers. As an aftermarket alternative, it offers reliable performance and cost savings.
Technical properties & cross references
Specifications
| Body Height |
261 mm (10 9/32") |
| Total Height |
261 mm (10 9/32") |
| Product Net Weight |
3.04 kg (6.7 lbs) |
| Largest Inner Diameter |
103 mm (4 1/16") |
| Outer Diameter |
166 mm (6 17/32") |
| Largest Outer Diameter |
299 mm (11 25/32") |
| 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 |
| Oxfil |
USD 87.42 |
16 Oct 2026 |
| The Air Market |
USD 151.26 |
15 Oct 2026 |
| FilterFinder Online |
USD 167.00 |
15 Oct 2026 |
| Air Compressor Services |
USD 305.50 |
15 Oct 2026 |
| Compressor Parts Express |
USD 551.35 |
15 Oct 2026 |
| Spare Part Mart |
USD 69.94 |
Today |
Our price of USD 69.94 is 20% to 87% 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
Continuous-Duty Industrial Compressors
In manufacturing plants where compressors run 24/7, this separator ensures efficient oil separation, reducing oil carryover and protecting downstream equipment. This extends the life of your compressor and minimises unplanned downtime.
Remote or Harsh Operating Environments
For compressors operating in dusty or humid conditions, this separator maintains consistent filtration performance. Its robust construction helps prevent contamination-related failures, keeping your operations running smoothly.
Fleet Maintenance and Inventory Consolidation
If you manage multiple Atlas Copco compressors from the GA series, stocking this separator simplifies inventory management. One part number fits several models, reducing stock complexity and ensuring quick replacements.
Scheduled Overhaul and Preventative Maintenance
During routine compressor service intervals, replacing the separator with this separator helps restore efficiency and maintain optimal pressure dew points. This proactive approach reduces energy consumption and operating costs.
Frequently asked questions
How can I confirm this separator fits my compressor?
Check your compressor model and serial number against the verified list: Atlas Copco GA 55, GA 45 PLUS, GA 37 PLUS, GA 55 VSD, GA 45 VSD, GA 37 VSD, and GA 30 PLUS from specified serial numbers. If your model is not listed, please contact us with your OEM part number for cross-reference.
What filtration rating does this separator have?
This separator is a coalescing separator designed to remove oil aerosols from compressed air. While specific micron ratings are not provided, it is built to the original dimensions and ratings for the listed Atlas Copco compressors.
What are the key dimensions and how do I verify fitment?
The separator has a body height of 261 mm, outer diameter of 166 mm, and largest outer diameter of 299 mm. The largest inner diameter is 103 mm. Compare these with your existing separator to ensure physical compatibility.
Is this an OEM genuine part or an aftermarket alternative?
This is a high-quality aftermarket replacement, not a genuine OEM part. It is designed as a direct replacement for the listed brands and built to the original dimensions and ratings, offering a cost-effective alternative.
How do I install this separator?
Installation is similar to the original separator. Ensure the compressor is off and depressurised. Remove the old separator, clean the mounting surface, and install the new one, tightening to the manufacturer's recommended torque. Refer to your compressor manual for specific instructions.