Description
Overview:
This genuine Stihl Spool Insert is the internal reel component for the AutoCut 40-4 mowing head used on Stihl brushcutters and strimmers. Moulded from a tough, impact‐resistant polymer, it supports and guides the trimmer line inside the head so the automatic feed works smoothly and the line wears evenly. The insert is a direct replacement for worn or cracked internals that can cause poor line advance or tangling, restoring consistent cutting performance. Designed for the Stihl AutoCut 40-4 (also listed as AutoCut40-4), it is sized for a precise fit and reliable rotation at working speed. The black polymer construction resists abrasion and heat generated during extended trimming, making it suitable for regular professional and domestic use.
Key Features:
- Genuine Stihl OEM part for assured fit and compatibility
- Durable polymer construction resists impact, abrasion, and heat
- Maintains smooth auto line feed and even winding
- Helps prevent line tangles and feed jams in the head
- Direct replacement for worn internal reel components
- Stable guidance of line for consistent cutting results
- Easy to fit with standard hand tools; no modifications required
- Compatible with the Stihl AutoCut 40-4 mowing head
Typical Applications:
Used to restore reliable line feeding and cutting performance on Stihl brushcutters/strimmers fitted with the AutoCut 40-4 head. Suitable for trimming long grass, coarse growth, and weeds around fences, walls, kerbs, paths, trees, and landscaped areas on gardens, estates, commercial grounds, and highway verges.
Also known as:
Inner reel, bobbin insert, line carrier, string trimmer inner spool, trimmer head insert, line core, reel core for 40-4, head spool insert, line bobbin core.
Fits Models:
AutoCut 40-4
AutoCut40-4
Alternate Part Numbers:
4003-713-3012, 40037133012
Product Specifications
| L&S Part No. | 4003 713 3012 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 40037133012 |
| Unit of Sale | 1 |
| Applications | AutoCut 40-4, AutoCut40-4 |
| Machine Type | Trimmers |
| Fits Brands | Stihl |
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