The Atlas Copco 6151661 is a genuine secondary air filter element specifically engineered for Atlas Copco XAS series portable air compressors. This critical component provides an additional layer of filtration, capturing fine dust and contaminants that may bypass the primary filter. It safeguards the engine and compressor components from abrasive particles, preventing premature wear and extending the operational lifespan of the machinery. With an outer diameter of 99 mm, an inner diameter of 70 mm, and a height of 250 mm, this filter ensures optimal air quality for reliable and efficient performance in demanding environments.