- Compatibility : Designed specifically for MS171, MS181, and MS211 chainsaws, ensuring a perfect fit for reliable performance. - OEM Replacement : Replace your old filter with part number 1139 120 1602 for an upgrade that maintains your equipment's integrity. - Superior Filtration : Our lawn mower air filter offers exceptional filtration to keep your engine running smoothly. Say goodbye to dust, dirt, and other contaminants that can hinder equipment efficiency. - Enhanced Engine Performance : Experience improved starting, consistent power delivery, and better fuel efficiency when using our premium air filters. Tackle lawn care tasks with confidence and ease. - Durable Construction : Crafted from high-quality materials, our garden air filter tools are built to endure the rigors of outdoor use. Whether mowing through thick grass or navigating rough terrain, this air filter maintains its integrity, providing reliable engine protection. - Practical Applications : Perfect for residential gardeners maintaining their lawns or landscaping professionals who require robust performance under challenging conditions. This air filter ensures your equipment operates at its best, extending its lifespan and efficiency.