Description
Overview:
This Oil Pump is a genuine Stihl part for maintaining the bar and chain lubrication system on Stihl chainsaws, including the MS 231 and MS 251. Built with a robust metal housing and precision internal components, it feeds chain oil from the tank to the guide bar to keep the chain running smoothly and reduce wear. Consistent lubrication helps protect the drive sprocket, bar groove, and chain links, improving cutting efficiency and extending service life. Identified by MPN 1143 640 3201, this OEM pump is designed for a reliable fit and correct oil delivery on compatible models. It is a practical replacement during routine servicing or when diagnosing poor oil flow, dry bar issues, or premature chain and bar wear.
Key Features:
- Genuine Stihl OEM part for correct fit and performance on specified models
- Consistent oil delivery to bar and chain for smoother cutting and reduced friction
- Durable metal construction for long service life in demanding conditions
- Helps prevent premature wear of bar, chain, and drive components
- Supports efficient cutting performance and cleaner chip evacuation
- Compatible with Stihl Ematic lubrication systems used on these saws
- Straightforward to replace during routine maintenance with basic tools
- Identified by MPN 1143 640 3201 for accurate parts selection
Typical Applications:
Replacement oil pump for Stihl mid-range chainsaws used in firewood processing, landscaping, farming, and light arborist work. Ideal when the chain appears dry, oil consumption drops, or bar tip runs hot. Suitable for restoring reliable lubrication after contamination, wear, or damage to the original pump during heavy site use or prolonged cutting sessions.
Also known as:
Lubrication pump, chain oil pump, bar and chain oiler, automatic oiler unit, oiling pump assembly, chainsaw oiler, chain lubrication pump.
Fits Models:
MS 231, MS 231 C, MS 251, MS 251 C, MS231, MS231C, MS251, MS251C
Product Specifications
| L&S Part No. | 1143 640 3201 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11436403201 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part for MS 231 and MS 251 chainsaws - Durable metal construction ensures long service life - Consistent oil delivery reduces friction and wear - Compatible with Stihl Ematic lubrication systems - Identified by MPN 1143 640 3201 for accurate selection |
| Fits Models | MS231, MS251 |
