Description
4243 400 1301 STIHL Ignition Module – Genuine OEM Ignition System Part
The STIHL Ignition Module (4243 400 1301) is a genuine OEM electronic ignition component designed to deliver precise spark timing and reliable engine performance for select STIHL long-reach hedge trimmers. This ignition module generates the high-voltage spark required for combustion and ensures proper ignition timing under varying engine loads.
Over time, ignition modules may fail due to heat exposure, vibration, electrical wear, or internal breakdown. A faulty ignition module can result in hard starting, no-start conditions, misfiring, or loss of power. Replacing it with the correct OEM part restores factory-specified ignition performance without replacing the entire engine assembly.
Manufactured to STIHL factory specifications, this genuine ignition module ensures correct spark output, reliable timing, and long-term durability under professional operating conditions.
Product Details
OEM Part Number: 4243 400 1301
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 starting performance
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Replace faulty or intermittent ignition coils
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Maintain consistent engine power and efficiency
⚠️ A failing ignition module can cause no-start conditions, misfiring, or reduced engine performance.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4243 400 1301
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Your unit model and serial number match those listed below
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Application matches your STIHL illustrated parts diagram
⚠️ This ignition module applies only to engines up to specific serial numbers — always verify serial range before ordering.
Compatibility
This OEM ignition module fits select STIHL long-reach hedge trimmer models within specific serial number ranges:
Long-Reach Hedge Trimmers (Serial Number Specific)
HL 91 K
(Engine up to serial number 514399784)
HL 94
(Engine up to serial number 514368761)
HL 94 K
(Engine up to serial number 514368761)
HL 94 KC-E
(Engine up to serial number 514368761)
(Exact fitment depends on engine serial number — always verify using OEM parts diagram and engine identification.)
Installation Notes
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Disconnect spark plug before servicing
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Remove engine 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 correct air gap between ignition module and flywheel per STIHL specification
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Reconnect wiring and reassemble unit
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Test for proper spark and engine operation
⚠️ Proper air gap setting is critical for correct ignition performance.
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 operational issues
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Always use genuine STIHL OEM ignition components for correct timing and reliability
