Original Stihl ignition module 1139 400 1307. OEM-quality performance for MS171, MS181, and MS211 chainsaws. Durable, reliable ignition system replacement.
✅ Genuine OEM Part – Authentic Stihl ignition module ensures correct fit and top-tier performance. 
✅ Wide Model Compatibility – Made for MS171, MS181 (including C variants), and MS211 chainsaws up to specific serial numbers. 
✅ Durable Construction – Solid metal and plastic build delivers reliable ignition under demanding conditions. 
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✅ Correct Serial‑Number Fit – For MS 211, use this part for serial numbers up to 295856561; saws with higher numbers require part 1139 400 1311. 
✅ Easy Installation – Mounting tabs and plug design are tailored for quick, precise replacement.