This coalescing element is an equivalent replacement for BOTTARINI part number 223051. It fits the compressed air filter housing the original element was made for and performs the same duty, merging the fine oil and water droplets carried in the air stream into larger drops that fall out of the flow and drain away. Contaminated air is hard on everything downstream of the compressor. Oil carryover fouls desiccant beds, coats the internals of pneumatic valves and cylinders, and ruins finishes in paint and coating work. Good coalescing filtration, changed on a sensible interval, is the cheapest insurance available against those problems. Our coalescing filters and elements range covers replacement media for many compressor and filter brands, and our air dryers collection handles the moisture side of air treatment. If you would like the fit confirmed, send us the housing model you are working on. Note: This is an equivalent part and not an original equipment manufacturer (OEM) part number. Some manufacturers require OEM parts to maintain your warranty. | Air Supply Number: KP55-006