{"product_id":"stihl-carburetor-primer-bulb-4226-121-2700-hs45-fs38-5-pack","title":"Stihl Carburetor Primer Bulb 4226 121 2700 – 5 Pack","description":"\u003ch2\u003eStihl Replacement Carburetor Primer Bulb – Part No. 4226 121 2700\u003c\/h2\u003e\n\u003cp\u003eKeep your Stihl outdoor power equipment running at peak performance with this direct-fit replacement carburetor primer bulb. Engineered to match OEM specifications, this primer bulb restores reliable fuel priming to your trimmer, blower, hedger, or pole pruner — getting your machine started quickly and consistently. Each pack includes \u003cstrong\u003e5 primer bulbs\u003c\/strong\u003e, so you'll always have a spare on hand for the season ahead.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 4226 121 2700\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Diameter (ID):\u003c\/strong\u003e 16.2 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter (OD):\u003c\/strong\u003e 18.7 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight (H):\u003c\/strong\u003e 19 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLip Diameter:\u003c\/strong\u003e 21.7 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 5 × Primer Bulbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWide Model Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis primer bulb is compatible with a broad range of Stihl models, including:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBG Series:\u003c\/strong\u003e BG45, BG46-DZ, BG46-Z, BG55, BG56, BG66C-E-D, BG75, BG85, BG86, BG86C-E\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBR \/ BT \/ FR Series:\u003c\/strong\u003e BR200, BT130, BT45, FR130T\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFS Series:\u003c\/strong\u003e FS38, FS38Z, FS40C-E, FS40C-EZ, FS40-Z, FS45, FS45C-E, FS45C-EDZ, FS45C-EZ, FS45D-Z, FS45L, FS45-Z, FS46C-EDZ, FS46C-EZ, FS46-DZ, FS46-Z, FS50, FS50C-E, FS50C-EL, FS50C-ELZ, FS50L, FS50-LZ, FS55, FS55R, FS56, FS56C-E, FS56R, FS56RC-E, FS70C-E, FS70RC-E, FS70RC-EZ, FS75, FS80 (Newer), FS80 (Old Pre 90s), FS80R, FS85, FS85R, FS85RX, FS85T, FS87, FS87R, FS90, FS90R, FS90R-Z, FS90-Z, FS100, FS110, FS310\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHL Series:\u003c\/strong\u003e HL45, HL75, HL75K, HL90K, HL95, HL95K, HL100, HL100K\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHS Series:\u003c\/strong\u003e HS45, HS75, HS80, HS81R, HS81T, HS82RC-E, HS82T, HS85, HS86R, HS86T, HS87R, HS87T\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHT Series:\u003c\/strong\u003e HT100, HT101, HT130, HT131\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKM Series:\u003c\/strong\u003e KM55, KM56C-E, KM56RC-E, KM56RC-EZ, KM85, KM85R, KM90, KM90R, KM100, KM100R, KM110R, KM130, KM130R\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMM \/ SH Series:\u003c\/strong\u003e MM55, SH55, SH56C-EZ, SH56C-ED, SH56-D, SH85, SH86C-E, SH86C-ED, SH86C-EZ, SH86-D\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This Primer Bulb?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePrecise OEM-Spec Fit:\u003c\/strong\u003e Dimensionally matched to the original part for a secure, leak-free seal\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from flexible, fuel-resistant material that holds up to regular use and outdoor conditions\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Snaps into place with no special tools required — a straightforward DIY repair\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGreat Value Pack:\u003c\/strong\u003e 5 bulbs per pack ensures you're covered for multiple machines or future replacements\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Fits dozens of Stihl trimmers, blowers, hedgers, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cp\u003eBefore installing, ensure the carburetor and surrounding area are clean and free of debris. Remove the old primer bulb by carefully prying it out of its seat. Press the new bulb firmly into the retaining ring until it clicks securely into place. Check all fuel lines for cracks or wear while you have the carburetor accessible — a great time to inspect and service your equipment.\u003c\/p\u003e\n\n\u003cp\u003eFor more information on safe outdoor power equipment maintenance, visit the U.S. Consumer Product Safety Commission – Outdoor Power Equipment Safety.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Product colour may vary slightly from images shown due to monitor display settings and lighting conditions.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What Stihl models is this carburetor primer bulb compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This replacement primer bulb (Part No. 4226 121 2700) is compatible with a wide range of Stihl outdoor power equipment, including models in the FS, HS, BG, KM, HL, HT, SH, MM, BR, BT, and FR series. Key compatible models include the FS38, FS45, FS55, FS85, HS45, HS80, KM85, KM110R, BG55, SH55, and many more. Please refer to the full compatibility list above to confirm your model is included.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the dimensions of this primer bulb?\u003c\/h4\u003e\n\u003cp\u003eA: The primer bulb has an Inner Diameter (ID) of 16.2 mm, an Outer Diameter (OD) of 18.7 mm, a Height (H) of 19 mm, and a Lip Diameter of 21.7 mm. These dimensions match the OEM Stihl part specification for part number 4226 121 2700, ensuring a proper fit in compatible carburetors.\u003c\/p\u003e\n\u003ch4\u003eQ: How many primer bulbs are included in each pack?\u003c\/h4\u003e\n\u003cp\u003eA: Each pack contains 5 replacement primer bulbs, giving you excellent value and ensuring you have backups ready for future maintenance or for use across multiple pieces of Stihl equipment.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need special tools to install this primer bulb?\u003c\/h4\u003e\n\u003cp\u003eA: No special tools are required. The primer bulb snaps into the carburetor's retaining ring by hand. Simply remove the worn bulb and press the new one firmly into place until it seats securely. Always refer to your equipment's service manual if you are unsure of the installation process.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What Stihl models is this carburetor primer bulb compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This replacement primer bulb (Part No. 4226 121 2700) is compatible with a wide range of Stihl outdoor power equipment, including models in the FS, HS, BG, KM, HL, HT, SH, MM, BR, BT, and FR series. Key compatible models include the FS38, FS45, FS55, FS85, HS45, HS80, KM85, KM110R, BG55, SH55, and many more. 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