The Lombardini 059R090 is an original equipment manufacturer (OEM) cyclonic prefilter designed to provide superior air filtration for Minsel M1, M2, M3, M4, and M5 engines. This essential component effectively separates larger dust and debris particles from the air before they reach the main air filter, extending the life of the primary filter and protecting the engine from premature wear. With an outer diameter of 95 mm and a height of 51 mm, this prefilter is a direct replacement, ensuring optimal performance and fit for compatible Minsel engines.