Sale!
1141 121 4730 STIHL Metering Diaphragm (Genuine OEM Part)

1141 121 4730 STIHL Metering Diaphragm (Genuine OEM Part)

Original price was: $4.68.Current price is: $1.40.

SKU: G553375546 Category:

Description

1141 121 4730 STIHL Metering Diaphragm (Genuine OEM Part)

The STIHL 1141 121 4730 is a genuine OEM metering diaphragm designed to regulate fuel flow within the carburetor on a wide range of compatible STIHL chainsaws and power equipment. This diaphragm responds to engine demand, allowing precise fuel metering to ensure smooth operation, consistent power output, and reliable starting.

Manufactured to STIHLs original equipment specifications, this metering diaphragm is produced from high-quality, fuel-resistant material to maintain flexibility, accuracy, and durability over time. Using a genuine STIHL metering diaphragm helps restore proper carburetor function and maintain factory engine performance.

Product Details

  • Manufacturer Part Number: 1141 121 4730

  • Brand: STIHL

  • Part Type: Metering Diaphragm

  • System: Fuel system / Carburetor assembly

  • Function: Regulates fuel flow inside the carburetor

  • Material: Fuel-resistant flexible diaphragm material

  • OEM Status: Genuine STIHL OEM replacement

Function

  • Controls fuel delivery based on engine demand

  • Maintains consistent fuelair mixture

  • Supports smooth idle, acceleration, and power output

  • Helps ensure reliable starting and efficient combustion

Compatible With STIHL Equipment

Chainsaws

  • MS 271 FarmBoss (Carburetor C1Q-S246, C1Q-S252, C1Q-S211, C1Q-S178)

  • MS 271 (Carburetor C1Q-S246, C1Q-S252, C1Q-S211, C1Q-S178)

  • MS 291 (Carburetor C1Q-S246, C1Q-S252, C1Q-S211, C1Q-S178)

  • MS 291 C-BEQ (Carburetor C1Q-S247, C1Q-S253, C1Q-S212, C1Q-S179)

  • MS 261 C-MQ (Carburetor 1141/30, 1141/34)

  • MS 261 C-M (Carburetor 1141/30, 1141/34)

  • MS 261 C-Q (Carburetor 1141/46, C1Q-S211, C1Q-S178)

  • MS 261 (Carburetor 1141/46, C1Q-S211, C1Q-S178)

Trimmers / Brushcutters / Kombi

  • FS 91 / FS 91.0 / FS 91 R

  • FS 111 / FS 111 R / FS 111 RX

  • FS 131 / FS 131.0 / FS 131 R / FS 131.0 R (Carburetor 4180/20)

  • FS 311 (Carburetor 4180/20)

  • KM 91 R

  • KM 111 R

  • KM 131 R

Other Equipment

  • BT 131 (Carburetor 4180/20)

  • FB 131

  • FC 91 / FC 96 / FC 111

  • HT 102 / HT 103 / HT 105 / HT 131 / HT 132 / HT 133 / HT 134 / HT 135

How Its Used

This metering diaphragm installs inside the carburetor and flexes in response to pressure changes, controlling the fuel metering needle. It works together with other carburetor components to maintain accurate fuel delivery across all operating conditions.

Proper installation is essential for correct carburetor operation and engine performance.

Suggested Maintenance

  • Replace the diaphragm during carburetor rebuilds

  • Inspect for stiffness, cracking, or fuel saturation

  • Use only clean fuel to extend diaphragm life

  • Replace if engine exhibits lean running or poor throttle response

The STIHL 1141 121 4730 Metering Diaphragm is used in OEM-specified carburetor applications where precise fuel control, durability, and reliable engine performance are essential.

Related products