Stihl MS391 Ignition Coil 1140 400 1307

STIHL Ignition Module / Ignition Coil – OEM 1140 400 1307

Genuine STIHL MS 311 & MS 391 Chainsaw Ignition Coil Replacement

Restore reliable starting and consistent engine performance with this genuine STIHL ignition module (OEM part number 1140 400 1307). Designed specifically for the STIHL MS 311 and MS 391 chainsaws, this ignition coil / CDI module delivers a strong, consistent spark for smooth running in demanding cutting conditions.

🔧 Product Overview

The STIHL MS311 / MS391 ignition coil 1140 400 1307 is a critical component of your chainsaw’s ignition system, responsible for generating the high-voltage spark required for combustion. Built to STIHL’s exact OEM specifications, it ensures accurate ignition timing, improved fuel efficiency, and dependable engine operation.

Featuring an epoxy-potted coil and laminated steel core, this ignition module is engineered to withstand heat, vibration, moisture, and heavy-duty use. It includes a high-quality insulated spark plug lead with a secure rubber boot, ensuring reliable electrical connection and minimizing spark loss.

Ideal for replacing faulty or worn coils, this part helps resolve no-spark conditions, misfires, hard starting, and poor engine performance.

✅ Key Features

• Genuine STIHL OEM Part – Guaranteed fit, quality, and performance
• Part Number: 1140 400 1307 (also listed as 11404001307)
• High-Performance Ignition Coil – Delivers consistent spark and ignition timing
• Epoxy-Potted Construction – Protects internal components from moisture and vibration
• Laminated Steel Core – Ensures efficient energy transfer and stable operation
• Insulated HT Lead & Plug Boot – Secure spark plug connection with minimal arcing
• Direct OEM Fit – Matches original mounting points and wiring length
• Improves Starting & Performance – Fixes no-spark, weak spark, and misfire issues
• Durable Design – Built for professional forestry and heavy-duty use

⚙️ Compatibility

This STIHL ignition module / coil fits:

• STIHL MS 311
• STIHL MS 391

(Also commonly searched as MS311 and MS391 – always verify part number before purchase.)

🛠️ Typical Applications

• Replacing faulty ignition coils or modules
• Fixing no-spark or intermittent spark issues
• Restoring easy starting and smooth engine operation
• Chainsaw servicing and preventative maintenance
• Professional forestry, arborist, and landscaping work

🔄 Also Known As

• STIHL ignition coil
• CDI module
• Chainsaw ignition module
• Spark coil / coil pack
• Electronic ignition unit

🌲 Why Choose Genuine STIHL Parts?

Using a genuine STIHL ignition module 1140 400 1307 ensures:

• Perfect OEM fit and electrical compatibility
• Reliable spark and consistent engine performance
• Long-lasting durability in harsh environments
• Superior performance compared to aftermarket alternatives

📦 Product Specifications

• Manufacturer: STIHL
• Part Number: 1140 400 1307
• Alternate Format: 11404001307
• Part Type: Ignition Module / Ignition Coil / CDI Unit
• Unit of Sale: 1
• Machine Type: Chainsaw
• Fits Brand: STIHL

🚚 Built for Professional & Everyday Use

This STIHL MS391 / MS311 ignition coil replacement is ideal for professional loggers, arborists, landscapers, and homeowners who require dependable starting and consistent performance.

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