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4128 129 0900 STIHL Gasket Genuine OEM Part

4128 129 0900 STIHL Gasket Genuine OEM Part

Original price was: $7.00.Current price is: $2.10.

SKU: G553375338 Category:

Description

4128 129 0900 STIHL Gasket Genuine OEM Part

The STIHL Gasket (4128 129 0900) is a genuine OEM replacement sealing component designed for use in the air filter and spacer flange assemblies of a wide range of STIHL trimmers, brushcutters, blowers, sprayers, and multi-purpose equipment. This gasket helps ensure a proper seal between the carburetor housing, air filter base, and spacer flange, supporting correct airflow and reliable engine performance.

Manufactured to STIHLs exact specifications, this OEM gasket ensures proper fitment, durable sealing performance, and long-lasting reliability when replacing worn or damaged intake gaskets.

Product Details

  • OEM Part Number: 4128 129 0900

  • Brand: STIHL (OEM)

  • Part Type: Gasket

  • Application: Air Filter / Spacer Flange / Carburetor Housing Seal

  • Condition: New Genuine OEM Part

Function

This gasket is designed to:

  • Seal the connection between the air filter base and carburetor housing

  • Prevent air leaks that may affect fuel mixture

  • Support proper engine airflow and filtration

  • Replace worn, cracked, or damaged gaskets

  • Maintain reliable starting and smooth running performance

A damaged gasket may cause poor idle, lean running, or reduced engine performance.

Verify Fitment in 30 Seconds

Before ordering, confirm the following:

  • OEM part number 4128 129 0900

  • Part location: air filter / spacer flange assembly

  • Compatible STIHL model listed below

Always verify fitment by OEM part number for best accuracy.

Compatibility

Fits a wide range of STIHL equipment, including:

Trimmers / Brushcutters

  • FS 38 2-MIX

  • FS 40 C-E (4144)

  • FS 50 C-E L

  • FS 56 C-E, FS 56 RC-E

  • FS 70 R, FS 70 RC-E

  • FS 120

  • FS 200 R

  • FS 235.0, FS 235.0 R

  • FS 250, FS 250 R

  • FS 350

  • FS 450-K

Backpack & Clearing Units

  • FR 235.0

KombiSystem Units

  • KM 56 RC-E

Blowers / Shredders

  • BG 56 C-E

  • BG 66

  • BG 86, BG 86 C-E

  • BR 200

  • SH 56 C-E

  • SH 86 C-E

Pole Pruners / Long Reach Units

  • HL 56 K

  • HT 56 C-E

  • HT 250

Specialty Units

  • FC 56 C-E

  • FC 70, FC 70 C-E

  • BT 120 C, BT 121

  • SP 200

  • MM 56 C-E Yard Boss

This list includes common applications always confirm using your parts diagram or owners manual.

Installation / Usage

  1. Turn off engine and allow it to cool completely

  2. Remove the air filter cover and air filter base

  3. Locate the gasket between the spacer flange and carburetor housing

  4. Remove the old gasket carefully

  5. Install the new STIHL OEM gasket in the correct position

  6. Reassemble components and test for proper sealing

Maintenance Tips

  • Inspect gaskets regularly for cracking or air leaks

  • Replace damaged seals immediately to prevent lean running

  • Keep air filter components clean and properly seated

  • Use fresh fuel and maintain correct carburetor tuning

  • Use only genuine STIHL replacement parts for best fit and reliability

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