STIHL MS171 Air Filter

The Gasket Genius air filter fits the Stihl MS171 chainsaw and replaces part number: 1139 124 0800. It is designed to prevent dust, sawdust and debris from entering the carburettor and engine, ensuring clean airflow and supporting smooth engine operation.

By keeping the intake air clean, it helps maintain the proper fuel‑air mixture, improves starting reliability, and reduces internal wear on engine components. Effective filtration contributes to consistent performance and prolongs engine life, especially in dusty or demanding conditions.

A practical replacement for a worn or clogged air filter, helping keep your chainsaw running efficiently and protecting critical parts for long-term reliable operation.

Fits specified Stihl chainsaw model:

• Stihl MS171

Replaces part number:

• 1139 124 0800