Description
Overview:
The Oil Seal 17x30x4.4 for Stihl 029, 039 is a Genuine Stihl OEM part designed to keep engine oil where it should be and stop air ingress at rotating shafts. Built from durable, oil‐resistant elastomer with a robust construction for stability in service, it helps maintain correct lubrication and engine performance on petrol chainsaws. Commonly used around crankcase and shaft locations, it supports reliable running and reduces wear by maintaining an effective seal under vibration and heat. Dimensions: 17 x 30 x 4.4 mm (0.67 x 1.18 x 0.17 inches). Suitable for professional and domestic users, it fits models including the Stihl 029 and 039 and equivalent MS-series saws that share this specification.
Key Features:
- Genuine Stihl OEM seal for dependable fit and performance
- Dimensions: 17 x 30 x 4.4 mm (0.67 x 1.18 x 0.17 inches) for correct seating
- Durable elastomer sealing lip to resist oil, fuel vapours, and heat
- Helps prevent oil leaks and air leaks for stable tuning and power
- Maintains crankcase sealing integrity to protect internal components
- Precision manufacture for consistent, repeatable sealing
- Compact, low-profile design to suit tight engine assemblies
- Suitable for routine maintenance or full engine rebuilds
- Straightforward replacement when servicing shafts or bearings
- Reduces risk of premature wear and helps extend service life
Typical Applications:
Used on Stihl chainsaws to seal rotating shafts and crankcase areas where oil control and airtightness are critical. Ideal during carburettor tuning issues, vacuum/pressure test failures, or when refurbishing engines that show signs of oil seepage, dirt ingress, or inconsistent idle. Suitable for preventative maintenance to keep saws running reliably in forestry, landscaping, and general property maintenance.
Also known as:
Shaft seal, rotary oil seal, crankcase seal, lip seal, sealing ring, simmerring, engine oil seal, rotary shaft gasket (rubber type). These terms refer to the same style of component used to keep oil in and contaminants out around a rotating shaft.
Fits Models:
029, 030, 031, 039, MS 290, MS 310, MS 390, MS290, MS310, MS390
Alternate Part Numbers:
9639-003-1743, 96390031743
Product Specifications
| L&S Part No. | 9639 003 1743 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 96390031743 |
| Unit of Sale | 1 |
| Applications | 029, 030, 031, 039, MS 290, MS 310, MS 390, MS290, MS310, MS390 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS290, MS310, MS390 | 030, 031 | 029, 039 |
