Description
Overview:
This Air Filter Plate is a genuine Stihl part for the MS 171 and MS 171 C chainsaws (OEM No. 1139 124 0800). It is a flat filter assembly that sits in the intake path to clean the air before it reaches the engine. Built from a durable plastic frame with fine filter media, it helps trap dust and chips from timber cutting and general site debris. Keeping the intake clean protects the piston and cylinder from wear, supports smooth running, and helps the chainsaw start and idle reliably. Designed to match the original specification, it fits correctly without modification and is suitable for routine servicing or a like-for-like replacement on machines used by homeowners, tradespeople, and grounds teams.
Key Features:
- Genuine Stihl component for assured fit and performance (OEM No. 1139 124 0800)
- Built for MS 171-series machines for reliable sealing and airflow
- Durable construction to withstand regular use in dusty conditions
- Fine filtration helps protect the engine from harmful debris
- Helps maintain power output, fuel efficiency, and clean combustion
- Direct replacement for the original part with no adjustments required
- Straightforward to fit during standard maintenance procedures
- Supports longer engine life by reducing intake wear
- Stable fitment reduces bypass and unfiltered air ingress
Typical Applications:
Routine service replacement on Stihl MS 171-series chainsaws used for firewood cutting, pruning, property maintenance, landscaping, and light construction work. Recommended when the original filter is clogged, damaged, or after extended use in dusty environments to restore consistent airflow and protect the engine.
Also known as:
Intake air element, air filter element, pre-filter pad, engine intake filter, air cleaner insert, filter pad, intake screen.
Fits Models:
MS 171, MS 171 C, MS171, MS171C, MS 171 C BE, MS171CBE
Alternate Part Numbers:
1139-124-0800, 11391240800, SL 1176, SL1176
Product Specifications
| L&S Part No. | 1139 124 0800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391240800 |
| Unit of Sale | 1 |
| Applications | MS 171, MS 171 C, MS171, MS171C, MS 171 C BE, MS171CBE |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS171, MS171C |
