Description
Overview:
This Oil Pump Worm Gear is a Genuine Stihl part for small and mid-size Stihl chainsaws, including MS 170 and MS 180. It is a hard-wearing polymer gear with a steel drive spring, engineered to transfer rotation to the oil pump so the bar and chain receive a steady flow of lubricant. A worn or stripped worm gear is a common cause of poor chain oiling; replacing it restores reliable lubrication, helps prevent premature wear, and supports smooth cutting. Built to Stihl's OEM specification for fit and pitch, it integrates cleanly with the existing pump and drive system. Suitable for domestic, farm, and professional users who need dependable chain oil delivery across a wide range of Stihl models.
Key Features:
- Genuine Stihl OEM part for assured fit, function, and longevity
- Durable polymer gear and steel drive spring for reliable power transfer
- Precision-moulded helical profile for smooth engagement with the oil pump
- Restores consistent chain lubrication to protect bar, chain, and pump
- Simple to fit during routine service with no modifications required
- Designed to match Stihl tolerances, reducing noise and premature wear
- Cost-effective fix for oiling issues caused by a worn or stripped worm gear
- Corrosion-resistant materials suited to oily, dusty chainsaw environments
Typical Applications:
Used during maintenance or repair when the chain appears dry, oil output is intermittent, or after clutch and pump servicing. Suitable for forestry, arborist, landscaping, and garden work where reliable chain lubrication is essential for clean cutting, reduced friction, and extended component life.
Also known as:
Oil pump gear, worm drive, oiler worm, oil pump drive gear, chain oiler gear, pump worm, oil drive gear, oiling worm gear, drive pinion for oil pump.
Fits Models:
021, 023, 025, MS 162, MS 162 C, MS 170, MS 170 C, MS 171, MS 171 C, MS 172, MS 172 C, MS 180, MS 180 C, MS 181, MS 181 C, MS 182, MS 182 C, MS 190 T, MS 191 T, MS 210, MS 210 C, MS 211, MS 211 C, MS 230, MS 230 C, MS 231, MS 231 C, MS 250, MS 250 C, MS 251, MS 251 C
Alternate Part Numbers:
1123-640-7102, 11236407102
Product Specifications
| L&S Part No. | 1123 640 7102 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11236407102 |
| Unit of Sale | 1 |
| Applications | 021, 023, 025, MS 170, MS 170 C, MS 171, MS 171 C, MS 172, MS 172 C, MS 180, MS 180 C, MS 181, MS 181 C, MS 182, MS 182 C, MS 190 T, MS 191 T, MS 210, MS 210 C, MS 211, MS 211 C, MS 230, MS 230 C, MS 231, MS 231 C, MS 250, MS 250 C, MS 251, MS 251 C, MS162 / MS162C, MS170, MS170C, MS171, MS171C, MS172, MS172 / MS172C, MS172C, MS180, MS180C, MS181, MS181C, MS182, MS182 / MS182C, MS182C, MS190T, MS191T, MS210, MS210C, MS211, MS211C, MS230, MS230C, MS231, MS231C, MS250, MS250C, MS251, MS251C |
| Machine Type | Chainsaws |
| Fits Models | MS170, MS170C | MS180, MS180C | MS230, MS230C | MS250, MS250C | MS171, MS171C | MS181, MS181C | MS211, MS211C | 021, 023, 025 | MS231, MS251 | MS190T | MS191T | MS162 / MS162C | MS172 / MS172C | MS182 / MS182C |
