Description
Overview:
This Air Filter Manifold is a Genuine Stihl part for petrol chainsaws, designed to route clean intake air from the filter to the carburettor while maintaining a reliable seal. Made from durable moulded polymer (black), it withstands vibration, fuel mist, and regular use in outdoor conditions. It is engineered for a precise fit on Stihl MS 171 and MS 181 series machines, helping protect the engine from unfiltered air and restoring stable running if the original manifold has cracked or warped. OEM reference 1139 140 2502 (replacing 1139 140 2501). Suitable for routine maintenance or repair, it helps keep your saw performing consistently during cutting and pruning tasks.
Key Features:
- Genuine Stihl replacement part for assured compatibility and quality
- Direct-fit manifold for listed MS 171/181/211 variants; no modifications required
- Replaces previous part 1139 140 2501 for service continuity
- Robust polymer construction resists heat, oil, fuel, and vibration in daily use
- Maintains a sealed air path to protect the engine from dust ingress
- Helps restore reliable starting, smooth idling, and consistent throttle response
- Designed for quick installation with basic hand tools to minimise downtime
- Suited to professional landscaping, arborist work, and domestic cutting tasks
- Works with standard Stihl air filter and carburettor assemblies on the listed models
Typical Applications:
Replacing a worn, split, or leaking intake manifold during routine servicing or repair of Stihl chainsaws. Commonly fitted when diagnosing air leaks, erratic idle, flat spots on acceleration, or poor fuel tuning. Suitable for workshop maintenance, site work, arboriculture, grounds care, and general DIY use.
Also known as:
Intake boot, carburettor intake connector, inlet manifold, air intake adaptor, intake snorkel, air intake elbow, carb manifold, air passage connector for chainsaws.
Fits Models:
MS 171, MS 171 C, MS 181, MS 181 C, MS 211, MS 211 C, MS171, MS171C, MS181, MS181C, MS211, MS211C
Alternate Part Numbers:
1139 140 2501, 1139-140-2502, 1139-140-2501, 11391402501, 11391402502
Product Specifications
| L&S Part No. | 1139 140 2502 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391402502 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures compatibility with MS 171/181/211 chainsaws - Direct-fit manifold requires no modifications for installation - Durable polymer construction resists heat, oil, and vibration - Replaces part 1139 140 2501 for service continuity - Maintains sealed air path to protect engine from dust ingress |
| Fits Models | MS171, MS171C | MS181, MS181C | MS211, MS211C |
