Description
1137 120 0651 STIHL Carburetor C1Q-S258 (Genuine OEM Part)
The STIHL 1137 120 0651 is a genuine OEM carburetor, model C1Q-S258, designed to provide precise fuelair mixture control for reliable engine performance on compatible STIHL chainsaws. This carburetor supports smooth starting, stable idle, responsive acceleration, and consistent power output under a wide range of operating conditions.
Manufactured to STIHLs original equipment specifications, this carburetor is built with high-quality internal metering components to ensure accurate fuel delivery and long service life. Using a genuine STIHL carburetor helps maintain factory engine performance, fuel efficiency, and emissions compliance.
Product Details
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Manufacturer Part Number: 1137 120 0651
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Brand: STIHL
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Part Type: Carburetor
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Carburetor Model: C1Q-S258
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Alternate Carburetor Models: C1Q-S135, C1Q-S104 (where specified)
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System: Fuel system / Air intake system
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Function: Regulates fuelair mixture for engine operation
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OEM Status: Genuine STIHL OEM replacement
Function
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Delivers precise fuelair mixture to the engine
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Supports smooth idle, acceleration, and full-throttle operation
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Improves starting reliability and fuel efficiency
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Maintains factory engine performance specifications
Compatible With STIHL Chainsaws
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MS 192 T (Carburetor C1Q-S258, C1Q-S135, C1Q-S104)
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MS 192 TC-E (Carburetor C1Q-S258, C1Q-S135, C1Q-S104)
How Its Used
This carburetor mounts between the air filter and intake manifold, metering fuel into the engine according to throttle position and operating conditions. It works in conjunction with the air intake and fuel systems to ensure efficient combustion and consistent engine output.
Proper installation and adjustment are essential for correct engine operation.
Suggested Maintenance
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Use clean, fresh fuel mixed to STIHL specifications
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Inspect and clean the air filter regularly
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Monitor for hard starting, rough idle, or hesitation
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Replace the carburetor if proper adjustment no longer restores performance
The STIHL 1137 120 0651 Carburetor (C1Q-S258) is used in OEM-specified fuel system applications where accurate fuel delivery, reliability, and long-term durability are essential.
