The DONALDSON P52-5638 filter separator replacement is designed for long service life and low pressure drop. This aftermarket air/oil separator offers oil separation performance equal to or better than the original OEM separator specifications.
Replacing the air/oil separator on schedule is one of the simplest ways to keep a compressor running clean and efficient. This replacement separator captures fine oil mist before it leaves the sump tank and returns it to the compressor, keeping your air clean and your lubricant where it belongs. Rugged construction keeps each separator from collapsing under high differential pressure.
The DONALDSON P52-5638 separator equivalent is built with superior materials and engineering. We have replaced air/oil separators from all major brands in hundreds of thousands of applications since 1976.








