Description
Overview:
This Genuine Stihl primer pump cap (OEM 4226 121 2700) is a small but essential fuel system component for a wide range of Stihl handheld machines, including HS45 and HS85 hedge trimmers. Made from tough, fuel‐resistant black polymer, it secures and protects the primer bulb, helping the carburettor draw fuel correctly during starting. A sound cap prevents air leaks and ensures consistent priming for smoother cold starts and reliable running. Designed for a precise fit on compatible Stihl carburettor housings, it withstands regular use and contact with petrol/oil mix. It is a direct replacement for a worn, cracked or lost cap and restores proper fuel priming across many Stihl blowers, brushcutters, polesaws, Kombi engines, drills, and more.
Key Features:
- Genuine Stihl part for assured fit and quality
- Direct replacement for OEM 4226 121 2700
- Durable, fuel‐resistant polymer construction
- Helps prevent air leaks for consistent primer operation
- Supports easier cold starts and smoother running
- Secure seating of the primer bulb to protect against dislodging
- Resistant to petrol/oil exposure and regular handling
- Compact, lightweight design with factory-correct profile
- Quick to fit with basic tools; no modifications required
- Suitable across a wide range of Stihl trimmers, blowers, Kombi units and more
Typical Applications:
Used during routine servicing or when the existing cap is cracked, perished, or missing. Ideal for fixing hard‐starting issues caused by poor priming, air leaks, or fuel seepage around the primer area. Commonly fitted on Stihl hedge trimmers, brushcutters, blowers, pole pruners, Kombi engines, and drills to restore reliable fuel delivery.
Also known as:
Primer bulb cap, primer cover, bulb retainer, carburettor primer cap, purge bulb cap, fuel bulb cover, fuel pump cap.
Fits Models:
BG45, BG46, BG50, BG55, BG56, BG56C, BG65, BG66, BG75, BG85, BG86, BG86C, BR200, BR45C, BT 130, BT 130 Z, BT 131, BT 45, BT130, BT130Z, BT131, BT45, FC 100, FC 111, FC 55 DZ, FC 56, FC 70, FC 70 C, FC 73, FC 75, FC 85, FC 90, FC 91, FC100, FC110, FC111, FC55, FC55DZ, FC56, FC70, FC70C, FC73, FC75, FC85, FC90, FC91, FC95, FC96, FH75, FR125, FR130T, FR131T, FR135, FR145, FR230, FR230T, FR85, FR85T, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS200, FS230, FS250, FS310, FS311, FS36, FS38, FS40, FS40C, FS44, FS45, FS45C, FS45L, FS46, FS46C, FS50, FS50C, FS55, FS55C, FS55R, FS55RC, FS55T, FS56, FS56C, FS56R, FS56RC, FS70C, FS70R, FS70RC, FS75, FS80, FS80R, FS83, FS83T, FS85, FS85R, FS85RX, FS85T, FS87, FS87R, FS89, FS89R, FS90, FS90R, FS91, FS91R, FT100, HL 95, HL 95 K, HL100, HL100K, HL45, HL56K, HL75, HL75K, HL90, HL90K, HL95, HL95K, HS45, HS52, HS75, HS80, HS81, HS81R, HS81RC, HS81T, HS81TC, HS82, HS82R, HS82RC, HS82T, HS85, HS86, HS86R, HS86T, HS87, HS87R, HS87T, HT100, HT101, HT102, HT103, HT130, HT131, HT132, HT133, HT135, HT56 C, HT56C, HT70, HT70K, HT73, HT75, KA85R, KA85R Attachment, KM100, KM100R, KM110R, KM111R, KM130, KM130R, KM131, KM131R, KM55, KM55C, KM55R, KM55RC, KM56C, KM56RC, KM85, KM85R, KM90, KM90R, KM91R, KR85, KR85 Attachment, KW 85, KW85, MM 55, MM 55 C MultiSystem, MM 55-Z MultiSystem, MM 56 MultiSystem, MM55, MM55C, MM56, PC70, PC75, SH55, SH56, SH56C, SH85, SH86, SH86C, SP80, SP80K, SP81, SP85, SP85K, SP90, SP90T, SR 200, SR 200-D, SR 200-Z, SR200, SR200D, SR200Z
Alternate Part Numbers:
4226-121-2700, 42261212700
Product Specifications
| L&S Part No. | 4226 121 2700 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42261212700 |
| Unit of Sale | 1 |
| Applications | BG45, BG46, BG50, BG55, BG56, BG56C, BG65, BG66, BG75, BG85, BG86, BG86C, BR200, BR45C, BT 130, BT 130 Z, BT 131, BT 45, BT130, BT130Z, BT131, BT45, FC 100, FC 111, FC 55 DZ, FC 56, FC 70, FC 70 C, FC 73, FC 75, FC 85, FC 90, FC 91, FC100, FC110, FC111, FC55, FC55DZ, FC56, FC70, FC70C, FC73, FC75, FC85, FC90, FC91, FC95, FC96, FH75, FR125, FR130T, FR131T, FR135, FR145, FR230, FR230T, FR85, FR85T, FS100, FS100R, FS100RX, FS110, FS110R, FS110RX, FS110X, FS111, FS111R, FS111RX, FS120, FS130, FS130R, FS131, FS131R, FS200, FS230, FS250, FS310, FS311, FS36, FS38, FS40, FS40C, FS44, FS45, FS45C, FS45L, FS46, FS46C, FS50, FS50C, FS55, FS55C, FS55R, FS55RC, FS55T, FS56, FS56C, FS56R, FS56RC, FS70C, FS70R, FS70RC, FS75, FS80, FS80R, FS83, FS83T, FS85, FS85R, FS85RX, FS85T, FS87, FS87R, FS89, FS89R, FS90, FS90R, FS91, FS91R, FT100, HL 95, HL 95 K, HL100, HL100K, HL45, HL56K, HL75, HL75K, HL90, HL90K, HL95, HL95K, HS45, HS52, HS75, HS80, HS81, HS81R, HS81RC, HS81T, HS81TC, HS82, HS82R, HS82RC, HS82T, HS85, HS86, HS86R, HS86T, HS87, HS87R, HS87T, HT100, HT101, HT102, HT103, HT130, HT131, HT132, HT133, HT135, HT56 C, HT56C, HT70, HT70K, HT73, HT75, KA85R, KA85R Attachment, KM100, KM100R, KM110R, KM111R, KM130, KM130R, KM131, KM131R, KM55, KM55C, KM55R, KM55RC, KM56C, KM56RC, KM85, KM85R, KM90, KM90R, KM91R, KR85, KR85 Attachment, KW 85, KW85, MM 55, MM 55 C MultiSystem, MM 55-Z MultiSystem, MM 56 MultiSystem, MM55, MM55C, MM56, PC70, PC75, SH55, SH56, SH56C, SH85, SH86, SH86C, SP80, SP80K, SP81, SP85, SP85K, SP90, SP90T, SR 200, SR 200-D, SR 200-Z, SR200, SR200D, SR200Z |
| Machine Type | Chainsaws, Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | FS36, FS40, FS44 | FS38, FS45, FS46 | FS40, FS50 | FS55, FS55C, FS55R | FS56, FS56C, FS56R | FS75, FS80, FS85 | FS83, FS83T | FS90, FS90R | FS100, FS110 | FS120, FS200, FS250 | FS130, FS130R | FS310 | BG56 | HS45 | HS75 | HS81, HS86 | HS82 | BG66 | BG75 | BG86 | BR45C | BR200 | SH55, SH85 | SH56, SH86 | BG50 | FS70C, FS70R, FS70RC | FS91, FS91R | FS111, FS111R, FS111RX | FS131, FS131R | FS311 | FR85T, FR85 | FR125, FR135, FR145 | FR130T | FR131T | FR230, FR230T | FS89, FS89R | HT56 C | HT70, HT70K, HT75 | HT73 | FS230 | HT101 | HT102, HT103 | HT130 | HT131 | HT132, HT133 | KM55, KM55C, KM55R, KM55RC | KM56C, KM56RC | KM85, KM85R | KM90, KM90R | KM91R | KM100, KM100R, KM110R | KM111R Engines | KM130, KM130R | KM131, KM131R | KA85R Attachment | KR85 Attachment | MM 55, MM 55 C MultiSystem | MM 56 MultiSystem | MM 55-Z MultiSystem | KW 85 | FC 55 DZ | FC 56 | FC 70, FC 70 C | FC 73 | FC 75 | FC 85 | FC 90, 95 | FC 100 | FC 111 | SR 200 | SR 200-D | SR 200-Z | BT 130 | BT 131 | BT 130 Z | BT 45 | FC 91, 96 | HL45 | HL56K | HL75, HL75K | HL90K, HL90, HL95K | HL100, HL100K | HS52 | BG55 | BG85 | HS80 | HS85 | HS87 | HL 95, HL 95 K | HT135 | FS361C | FS411 C-EM | FS461 C-EM | HT134 | SP 85 | FS461 C-EML |
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