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Pump Diaphragm for Stihl 029, 039 - 4116 121 4800

Pump Diaphragm for Stihl 029, 039 - 4116 121 4800
Pump Diaphragm for Stihl 029, 039 - 4116 121 4800
Part No.
4116 121 4800
In stock
Dispatched today if ordered before 4pm
Dispatched next working day

£14.96 £12.47
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Description

Overview:
This Pump Diaphragm (Stihl part number 4116 121 4800) is a Genuine Stihl replacement for the fuel pump section of the carburettor. Made from fuel‐resistant synthetic material designed to withstand petrol and operating heat, it flexes to move fuel reliably through the carburettor. By replacing a hardened, torn, or warped diaphragm, it restores consistent fuel delivery and helps prevent hard starting, poor idle, or hesitation under load. Suitable for a wide range of Stihl tools, including chainsaws such as the 029 and 039, as well as many brushcutters, blowers, and sprayers. Built to OEM specifications for an accurate fit and dependable performance in everyday use.

Key Features:
- Genuine Stihl OEM diaphragm (4116 121 4800) for correct fit and function across listed machines
- Fuel‐resistant construction for durability with modern pump fuels
- Restores carburettor pumping action to improve starting, throttle response, and idle stability
- Maintains consistent fuel delivery under varying loads and temperatures
- Precision‐cut ports align with the carburettor body for reliable sealing
- Broad compatibility across Stihl chainsaws, brushcutters, blowers, and sprayers
- Straightforward installation with basic hand tools to minimise downtime
- Suitable for professional servicing and routine DIY maintenance

Typical Applications:
Used during carburettor repairs, overhauls, or routine services when fuel delivery issues appear, especially after long storage or when running quality has declined. Common in maintenance of Stihl chainsaws, brushcutters, backpack blowers, and mistblowers/sprayers to restore proper fuelling and reliable daily operation.

Also known as:
Fuel pump membrane, carburettor diaphragm, carb pump film, carb pump membrane, diaphragm sheet, fuel metering diaphragm, carb pump gasket/diaphragm.

Fits Models:
028, 028AV, 029, 030, 031, 039, 044, 046, 400, BR320, BR320L, BR340, BR340L, BR380, BR400, BR420, BR420C, FS360, FS360C, FS410C, FS420, FS420L, FS490C, FS500, FS510C, FS550, FS550L, FS560C, GS461, MS270, MS270C, MS280, MS280C, MS290, MS310, MS341, MS361, MS361C, MS390, MS440, MS441, MS441C, MS460, MS461, SR320, SR340, SR400, SR420

Alternate Part Numbers:
4116-121-4800, 41161214800

Product Specifications

More Information
L&S Part No. 4116 121 4800
Part Type Genuine Part
Manufacturer Stihl
OEM No. 41161214800
Unit of Sale 1
Applications 028, 028AV, 029, 030, 031, 039, 044, 046, 400, BR320, BR320L, BR340, BR340L, BR380, BR400, BR420, BR420C, FS360, FS360C, FS410C, FS420, FS420L, FS490C, FS500, FS510C, FS550, FS550L, FS560C, GS461, MS270, MS270C, MS280, MS280C, MS290, MS310, MS341, MS361, MS361C, MS390, MS440, MS441, MS441C, MS460, MS461, SR 320, SR 340, SR 420, SR320, SR340, SR400, SR420
Machine Type Chainsaws, Brushcutters, Sprayers
Fits Brands Stihl
Fits Models MS290, MS310, MS390 |  030, 031 |  029, 039 |  MS270, MS270C, MS280, MS280C |  028, 028AV |  MS361, MS361C |  MS440 |  MS460 |  FS360C FS410C |  FS500, FS550, FS550L |  BR320, BR400 |  MS441, MS441C |  FS360, FS420, FS420L (older models) |  FS490C, FS510C, FS560C |  MS341 |  MS461 |  044 |  046 |  SR 320, 400 |  SR 340, SR 420 |  GS461 |  FS491 C-EM |  FS561 C-EM

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