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Description
4180 120 1800 STIHL Filter – Genuine OEM Part
The STIHL Filter (4180 120 1800) is a genuine OEM replacement filter designed for use on select STIHL professional trimmers, brushcutters, hedge trimmers, and KombiMotor units.
This filter is installed within the engine or fuel/air system routing (application varies by model) to help protect critical components by filtering contaminants and supporting proper system operation.
Manufactured to STIHL factory specifications, this filter provides the correct fit, flow characteristics, and durability required for reliable performance under demanding operating conditions.
Replacing a clogged, worn, or damaged filter helps maintain proper airflow or fuel flow, improves performance, and prevents engine issues.
Manufactured to STIHL OEM standards, this filter ensures correct fitment and long service life.
Product Details
OEM Part Number: 4180 120 1800
Brand: STIHL (Genuine OEM)
Part Type: Filter
Application: Engine / system filter component (model-specific)
Condition: New Genuine OEM Part
Function
This OEM filter is designed to:
Filter contaminants from the system
Support proper airflow or fuel flow
Protect engine and related components
Replace clogged or worn original filters
Maintain consistent equipment performance
⚠️ A clogged filter may cause poor performance, starting issues, or engine damage.
Verify Fitment (Recommended)
Before ordering, confirm:
OEM part number 4180 120 1800
Filter location matches your STIHL parts diagram
Application matches your specific model configuration
⚠️ Always verify fitment by OEM part number and parts diagram, as filters vary by model and system design.
Compatibility
Fits select STIHL models and configurations, including:
FC 90 (Rewind starter, Fuel tank)
FC 95 (Rewind starter, Fuel tank)
FS 110
FS 110 R
FS 110 RX
FS 100 RX
FS 130
FS 130 R
FS 310
KM 130 R
HL 90 K (Muffler, Air filter)
HL 100 (Cylinder, Engine pan)
HL 100 K (Cylinder, Engine pan)
HT 100 (Muffler, Air filter)
HT 101 (⇥ 508613634)
HT 130 (⇥ 508507652)
HT 131 (⇥ 508571577)
KM 90 R (Rewind starter, Fuel tank)
KM 110 R (Cylinder, Engine pan)
FC 100 (Cylinder, Engine pan)
FC 110 (Cylinder, Engine pan)
FS 90 R 4180 (Rewind starter, Fuel tank)
FS 90 4180 (Rewind starter, Fuel tank)
(Exact application varies by model and configuration — verify using OEM parts diagram.)
Installation Notes
Turn off engine and allow it to cool
Access the filter location as required
Remove the existing filter carefully
Install STIHL OEM filter 4180 120 1800 securely
Ensure proper seating and correct routing
⚠️ Incorrect installation may restrict flow or cause performance issues.
Maintenance Tips
Inspect filters regularly during service intervals
Replace clogged filters promptly
Use only genuine STIHL OEM filters for correct fit and durability
