39329602-OEM Oil Filter Element for use with UP6 5-15HP and R4-11KW Rotary Compressor Replace OEM Oil Filter Element after every 2000 run hours or once every three months, whichever comes first. The full capacity coolant filter is a 5 micron replaceable element. Helps your air compressor perform at an optimal level and reduces the risk of damage to your expensive compressor components Genuine OEM parts meet exact equipment specifications and are backed by rigorous testing