Compatible with the STIHL MS170 MS180 017 018 chainsaw flywheel assembly, flywheel with fan, starter ring gear, central component of the ignition system.

This is an original flywheel, specifically designed for the STIHL MS170, MS180 chainsaws and their predecessors, the 017 and 018. As an essential component of the engine's ignition and starting system, it contains permanent magnets, fan blades, a starter ring gear, and a counterweight. It replaces original flywheels whose performance is compromised by corrosion, wear on the starter ring gear, magnet demagnetization, dynamic imbalance, or damaged keyways, thus ensuring smooth engine starting, precise ignition, stable operation, and efficient heat dissipation.