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Description
4237 400 1302 STIHL Ignition Module – Genuine OEM Ignition System Part
The STIHL Ignition Module (4237 400 1302) is a genuine OEM electronic ignition component designed to deliver consistent spark timing and reliable engine performance in select STIHL professional hedge trimmers. This module controls ignition timing and generates the high-voltage spark required for proper combustion.
Over time, ignition modules may fail due to heat exposure, vibration, electrical wear, or internal component breakdown. A faulty ignition module can cause no-start conditions, intermittent spark, misfiring, or loss of power. Replacing it with the correct OEM part restores factory-specified ignition performance without replacing the entire ignition system.
Manufactured to STIHL factory specifications, this genuine ignition module ensures correct spark timing, dependable operation, and long-term durability under professional operating conditions.
Product Details
OEM Part Number: 4237 400 1302
Brand: STIHL (Genuine OEM)
Part Type: Ignition Module
Application: Electronic ignition / spark generation system
Condition: New Genuine OEM Part
Function
This STIHL ignition module is designed to:
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Generate high-voltage spark for engine ignition
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Control precise ignition timing
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Restore reliable engine starting
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Replace faulty or intermittent ignition coils
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Maintain consistent engine performance under load
⚠️ A failing ignition module can cause no-start conditions, misfiring, or loss of power.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4237 400 1302
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Your unit model matches those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ Ignition modules are model- and production-specific — always verify by OEM part number and ignition system configuration.
Compatibility
This OEM ignition module fits select STIHL hedge trimmer models equipped with specific ignition and clutch system configurations, including:
Hedge Trimmers
HS 81 R (Ignition system, Clutch)
HS 81 T (Ignition system, Clutch)
HS 86 R (Ignition system, Clutch)
HS 86 T (Ignition system, Clutch)
HS 81 TC-E (Ignition system, Clutch)
(Exact fitment depends on production version — always verify using OEM parts diagram.)
Installation Notes
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Disconnect spark plug before servicing
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Remove starter housing to access ignition module
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Disconnect kill wire carefully
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Remove mounting screws and old module
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Set proper air gap between module and flywheel per STIHL specification
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Reconnect wiring and reassemble unit
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Test engine for proper spark and operation
⚠️ Ignition system service should be performed carefully to ensure correct spark gap and safe operation.
Maintenance Tips
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Inspect spark plug condition during ignition service
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Keep flywheel magnets clean and free of debris
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Check wiring for wear or damage
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Replace faulty modules promptly to prevent performance issues
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Always use genuine STIHL OEM ignition components for correct timing and reliability
