Description
Overview:
This Ignition Module is a genuine Stihl replacement part for MS311 and MS391 chainsaws, supplied under MPN 1140 400 1307. It generates and controls the high-voltage spark for dependable starting and steady running. The module features an epoxy-potted coil around a laminated steel core for strength, with an insulated high-tension lead and a durable rubber plug boot for a secure connection to the spark plug. Built for the harsh conditions of forestry and garden work, it resists heat, vibration, and moisture. Designed to fit the specified Stihl models without modification, it restores reliable ignition performance and helps maintain engine efficiency, making it suitable for both professional users and homeowners who need consistent results from their petrol two-stroke chainsaws.
Key Features:
- Genuine Stihl OEM part for assured fit and compatibility (MPN 1140 400 1307)
- Direct-fit design for MS311 and MS391 with correct lead length and mounting points
- Consistent spark delivery for easier cold and hot starts
- Epoxy-potted housing protects internal windings from vibration and moisture
- Laminated steel core for efficient energy transfer and stable ignition timing
- Robust, insulated HT lead with a snug rubber plug boot to minimise arcing
- Helps cure no-spark, weak-spark, misfire, and hard-start symptoms
- Built from durable materials to withstand prolonged professional use
- Simple to install as part of routine maintenance or fault rectification
- Supports smooth idle, clean acceleration, and reliable running under load
Typical Applications:
Used during maintenance or repair of Stihl chainsaws when diagnosing no-spark, intermittent spark, or misfiring. Suitable for forestry, arboriculture, landscaping, and estate management. Ideal when restoring reliable starting and consistent performance on work sites, farms, and domestic properties where dependable ignition is essential.
Also known as:
Ignition coil, CDI module, ignition unit, spark module, coil pack, high-tension ignition assembly, electronic ignition module, chainsaw coil.
Fits Models:
MS 311, MS 391, MS311, MS391
Product Specifications
| L&S Part No. | 1140 400 1307 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11404001307 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part for MS311 and MS391 chainsaws - Epoxy-potted coil resists vibration and moisture - Laminated steel core ensures stable ignition timing - Insulated high-tension lead with rubber plug boot - Direct-fit design requires no modification |
| Fits Models | MS311 | MS391 |
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