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Description
1139 120 1602 Air Filter | Genuine STIHL OEM Replacement
The STIHL 1139 120 1602 Air Filter is a genuine STIHL OEM replacement air-filter component designed for compatible MS 171, MS 181, and MS 211 chainsaws. The air filter helps keep dust, dirt, and debris from entering the engine's intake system while allowing the engine to receive the airflow it needs for proper operation.
Features That Make a Difference
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Genuine STIHL OEM replacement part
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Part Number: 1139 120 1602
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Alternate Part Number: 11391201602
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Product Type: Air Filter
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Designed for compatible STIHL MS 171, MS 181, and MS 211 chainsaws.
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Helps filter contaminants from incoming engine air.
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Designed for proper fit within the applicable engine and air-filter assembly.
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OEM-engineered for reliable filtration and fit.
Benefits
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Replaces a dirty, clogged, damaged, or worn air filter.
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Helps protect internal engine components from dust and debris.
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Helps maintain proper airflow to the engine.
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Supports consistent engine performance when properly maintained.
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Genuine STIHL construction provides proper fit and compatibility.
Specifications
| Specification | Details |
|---|---|
| Part Number | 1139 120 1602 |
| Alternate Part Number | 11391201602 |
| Product | Air Filter |
| Brand | STIHL |
| Product Type | Engine Air Filter |
| Applications | MS 171 / MS 181 / MS 211 |
| Assembly | Engine Housing / Cylinder / Muffler |
| Part Type | Genuine OEM Replacement |
Compatibility
The 1139 120 1602 Air Filter is listed for:
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MS 181 C-BE — Engine housing ErgoStart / Easy2Start
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MS 181 — Motor housing
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MS 211 C-BE — Cylinder / Muffler
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MS 171 — Cylinder / Muffler
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MS 211 — Cylinder / Muffler
Always verify your exact chainsaw model and parts diagram before ordering.
What Does the Air Filter Do?
The air filter is a critical part of the chainsaw's intake system. It removes airborne dust, dirt, and other particles from the air before it reaches the engine.
Keeping the air filter clean and properly installed helps protect internal engine components and maintain the airflow required for proper engine operation.
Signs Your Air Filter May Need Replacement
Inspect the filter if you notice:
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Heavy dirt or debris buildup.
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A clogged or restricted filter.
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Tears, cracks, or physical damage.
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Deformation.
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Poor fit inside the filter housing.
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Reduced engine performance.
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Difficulty maintaining proper engine operation.
A heavily contaminated or damaged filter should be replaced rather than continued in service.
Maintenance
Regular air-filter inspection is an important part of chainsaw maintenance.
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Shut off the chainsaw and allow the engine to cool.
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Remove the appropriate engine cover according to the owner's manual.
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Inspect the air filter for dirt or damage.
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Clean or replace the filter according to STIHL's maintenance instructions.
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Install the replacement 1139 120 1602 Air Filter correctly.
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Make sure the filter and cover are securely positioned before operating the chainsaw.
Always follow the maintenance instructions specified for your STIHL model.
Important Compatibility Note
This air filter is listed for several models in the MS 171, MS 181, and MS 211 families. STIHL configurations may vary by model and production version.
Before ordering, verify the exact model and current STIHL parts diagram to ensure this is the correct air filter for your chainsaw.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality OEM and replacement parts for lawn, garden, and outdoor power equipment.
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Genuine OEM replacement parts
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Quality products for residential and commercial equipment
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Reliable parts for professional equipment repair and maintenance
Protect your compatible STIHL chainsaw engine with the STIHL 1139 120 1602 Air Filter, a genuine OEM replacement for MS 171, MS 181, and MS 211 models.
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