The 2901 2055 00 oil separator element is an OEM part from Atlas Copco. The item may also be stylized in the parts manual as 2901205500.
2901 2055 00 was commonly used on the GA37VSD and GA45VSD rotary screw compressors. This was also a common separator used on the GA37 and GA45 fixed speed air compressors. Many different separator filter elements were used in this GA model range, please contact us if you would like confirmation on whether this part will work with your compressor.
The oil separator element removes oil from the compressed air prior to it being sent into your piping system.