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Description
4180 141 8601 STIHL Impulse Hose – Genuine OEM Part
The STIHL Impulse Hose (4180 141 8601) is a genuine OEM replacement impulse hose designed for use on select STIHL professional trimmers, brushcutters, edgers, hedge trimmers, KombiMotor units, and augers.
This hose is an essential engine component that transfers pressure pulses from the crankcase to the carburetor fuel pump system. Proper impulse signal delivery is critical for correct fuel pumping, smooth engine operation, and reliable starting.
Manufactured to STIHL factory specifications, this OEM impulse hose ensures correct fitment, flexibility, and durability under demanding operating conditions.
Replacing a cracked, leaking, or hardened impulse hose helps restore proper carburetor fuel delivery and prevents running or starting issues.
Product Details
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OEM Part Number: 4180 141 8601
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Brand: STIHL (Genuine OEM)
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Part Type: Impulse Hose
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Application: Carburetor impulse line / pressure hose (model-specific)
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Condition: New Genuine OEM Part
Function
This OEM impulse hose is designed to:
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Transfer crankcase pressure pulses to the carburetor
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Support proper fuel pump operation inside the carburetor
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Maintain consistent fuel delivery and engine performance
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Replace cracked, leaking, or worn impulse hoses
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Help prevent hard starting, stalling, or fuel starvation
⚠️ A damaged impulse hose may cause poor fuel pumping, lean running, or starting problems.
Verify Fitment (Recommended)
Before ordering, confirm:
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OEM part number 4180 141 8601
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Hose routing and configuration matches your model
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Application matches your STIHL illustrated parts diagram
⚠️ Fuel and impulse line components vary by model and production year — always verify fitment by OEM part number.
Compatibility
Fits select STIHL models and configurations, including:
Trimmers / Brushcutters
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FS 90 / FS 90 R (4180)
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FS 100 RX
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FS 110 / FS 110 R / FS 110 RX – Engine Ø 40 mm
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FS 130 / FS 130 R
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FS 310
Edgers
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FC 90
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FC 95
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FC 100
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FC 110
KombiMotors
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KM 90 R
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KM 110 R – Engine Ø 40 mm
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KM 130 R
Hedge Trimmers / Pole Pruners
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HL 90 K
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HL 100 / HL 100 K – Engine Ø 40 mm
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HT 100 – Engine Ø 40 mm
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HT 101
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HT 130
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HT 131
Augers / Other Units
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BT 130
(Exact application depends on model configuration — verify using OEM parts diagram.)
Installation Notes
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Remove engine covers and carburetor access components as required
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Locate the impulse hose connection between engine and carburetor
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Remove old hose carefully
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Install impulse hose 4180 141 8601 securely in correct routing
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Inspect for leaks or loose connections before operation
⚠️ Fuel system service should be performed by a qualified technician.
Maintenance Tips
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Inspect impulse and fuel lines regularly for cracks or hardening
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Replace hoses showing wear to prevent fuel delivery problems
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Always use genuine STIHL OEM hoses for correct fit and long service life
