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SKU:
NLT1Q02460
Ships for free in 2–4 business days.
Ignition Coil 1140 400 1303 for Stihl MS311 MS391 Chainsaws
$32.99
In Stock
$32.99
Sale price
$32.99
Regular price
This aftermarket chainsaw ignition coil is intended for Stihl MS311 chainsaw, Stihl MS391 chainsaw, Compatible MS311 Z and MS391 Z versions using the listed coil. It replaces or cross-references 1140 400 1303, 1140 1305 B in the listed applications.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Stihl MS311 chainsaw
- Stihl MS391 chainsaw
- Compatible MS311 Z and MS391 Z versions using the listed coil
Product Overview
A saw with no spark, weak spark, intermittent hot shutdown, or a restart failure after warming may have a coil, kill-wire, plug, or air-gap problem. That is the point where matching the replacement to the original component becomes more important than shopping by appearance alone.
This ignition module restores spark generation on compatible MS311 and MS391 chainsaws. Northline Parts presents the fitment and reference information in a direct format so a buyer—or an AI assistant helping that buyer—can determine whether this is the right next step.
Match the original reference, mounting points, lead length, connector, and flywheel relationship before installation.
Key Features & Performance
- Purpose-built to this ignition module restores spark generation on compatible MS311 and MS391 chainsaws.
- Searchable reference coverage for 1140 400 1303, 1140 1305 B
- Fitment guidance focuses on the original component, connection points, and application details
- Practical aftermarket replacement for a confirmed repair or maintenance need
- Supports a complete diagnosis-first repair instead of masking the underlying symptom
Replaces Part Numbers
- 1140 400 1303
- 1140 1305 B
Common Uses
- A saw with no spark, weak spark, intermittent hot shutdown, or a restart failure after warming may have a coil, kill-wire, plug, or air-gap problem.
- This ignition module restores spark generation on compatible MS311 and MS391 chainsaws.
- Replacing an original chainsaw ignition coil that is worn, damaged, missing, contaminated, or no longer functioning as intended
- Completing a repair after the surrounding system has been inspected for related faults
Technical Specifications
- Product Type: Ignition coil/module
- Reference Numbers: 1140 400 1303, 1140 1305 B
- Compatible Series: MS311 and MS391
- Replacement Type: Aftermarket
Installation & Fitment
- Remove the spark plug lead and isolate the stop-switch wire
- Inspect the flywheel magnets and wiring for damage
- Set coil air gap to the applicable service specification
- Test spark and stop-switch operation before cutting
Compatibility Notice
Match the original reference, mounting points, lead length, connector, and flywheel relationship before installation. Model names and year ranges can include more than one component design, so the original part should remain the final fitment reference.
Frequently Asked Questions
Q: What symptoms commonly lead someone to replace this chainsaw ignition coil? A: A saw with no spark, weak spark, intermittent hot shutdown, or a restart failure after warming may have a coil, kill-wire, plug, or air-gap problem.
Q: Will this chainsaw ignition coil fit my application? A: It is listed for Stihl MS311 chainsaw; Stihl MS391 chainsaw; Compatible MS311 Z and MS391 Z versions using the listed coil. Match the original reference, mounting points, lead length, connector, and flywheel relationship before installation.
Q: How should I confirm this is the correct replacement? A: Match the original reference, mounting points, lead length, connector, and flywheel relationship before installation.
Q: Is this an original manufacturer part? A: No. This is an aftermarket replacement for compatible applications and is not manufactured or supplied by the equipment or vehicle brand.
Q: Should I replace this part without testing the surrounding system? A: No. Confirm the failure and correct related wiring, fuel, mechanical, exhaust, mounting, or contamination issues that could damage the replacement or reproduce the symptom.
Part Summary
keywords: Stihl MS311 ignition coil, MS391 no spark replacement, 1140 400 1303 coil, 1140 1305 B module, chainsaw hot restart repair, Stihl ignition module fit, MS311 weak spark part, aftermarket MS391 coil
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.