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Description
4140 120 0619 – STIHL C1Q-S186 Carburetor (Genuine STIHL OEM Carburetor)
The STIHL 4140 120 0619 C1Q-S186 Carburetor is a genuine OEM replacement carburetor engineered to deliver precise fuel metering and dependable engine performance for compatible STIHL trimmers, brushcutters, edgers, and KombiSystem powerheads. Manufactured to STIHL's exact factory specifications, this carburetor provides the correct air-fuel mixture for reliable starting, smooth idling, responsive throttle control, and maximum engine efficiency.
Built with precision-machined aluminum components and factory-calibrated fuel circuits, the C1Q-S186 Carburetor is designed to withstand vibration, heat, and demanding outdoor operating conditions. Installing a genuine STIHL OEM carburetor restores original engine performance and helps eliminate fuel-related issues caused by wear, contamination, or ethanol fuel deposits.
Product Details
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Part Number: 4140 120 0619
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Brand: STIHL
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Model: C1Q-S186
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Part Type: Carburetor
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Function: Mixes air and fuel for efficient engine combustion
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Material: Precision-Machined Aluminum
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Installation: Direct OEM Replacement
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OEM Status: Genuine STIHL OEM Part
Key Features
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Genuine STIHL OEM carburetor
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Walbro C1Q-S186 design
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Factory-calibrated fuel metering
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Provides reliable starting and smooth idle
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Improves throttle response and engine performance
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Precision-machined aluminum construction
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Designed for long service life
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Direct replacement with no modifications required
Function
The 4140 120 0619 Carburetor precisely meters fuel and air before delivering the mixture to the engine. Proper fuel atomization ensures efficient combustion, consistent engine power, improved fuel economy, and dependable operation under varying loads.
Compatible STIHL Equipment
The STIHL 4140 120 0619 C1Q-S186 Carburetor is used on selected STIHL equipment, including models such as:
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FS 90
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FS 90 R
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FS 100
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FS 100 RX
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FS 110
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FS 110 R
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FC 90
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FC 100
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FC 110
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HL 90 K
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HL 100
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HL 100 K
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HT 100
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HT 101
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KM 90 R
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KM 110 R
Always verify your equipment model, serial number, carburetor model, and original OEM part number before ordering to ensure proper compatibility.
Who Is This For?
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Homeowners
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Professional landscapers
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Arborists
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Equipment repair technicians
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Municipal maintenance crews
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STIHL equipment owners
Recommended Applications
Ideal for:
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Carburetor replacement
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Engine tune-ups
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Hard-start repairs
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Fuel system restoration
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Preventive maintenance
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Restoring factory engine performance
Pros
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Genuine STIHL OEM quality
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Factory-calibrated fuel circuits
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Reliable starting and smooth idle
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Excellent throttle response
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Precision-machined construction
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Factory-correct fit
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Long service life
Cons
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Compatible only with specified STIHL models
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Fuel system should be cleaned and fresh fuel used during installation for best performance
Comparison – STIHL 4140 120 0619 OEM Carburetor vs Aftermarket Carburetors
STIHL 4140 120 0619 Genuine OEM Carburetor
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Exact OEM calibration
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Superior fuel metering accuracy
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Factory-tested performance
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Premium materials and construction
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Designed specifically for STIHL engines
Aftermarket Carburetors
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Calibration may vary
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Inconsistent fuel delivery
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Variable material quality
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Potential fitment issues
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Shorter service life
Why Buy from Barry's Power Equipment?
Barry's Power Equipment is an authorized STIHL dealer supplying genuine OEM replacement parts trusted by homeowners, professional landscapers, arborists, and outdoor power equipment technicians.
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Genuine OEM STIHL replacement parts
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Fast nationwide shipping
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Competitive pricing
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Expert technical support
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Extensive inventory for STIHL, SCAG, Toro, Exmark, Wright, Ariens, Gravely, Hydro-Gear, Kawasaki, Kohler, Honda, Briggs & Stratton, Ferris, Hustler, Cub Cadet, John Deere, and many other leading outdoor power equipment brands.
