The Genuine Stihl primer pump cap (OEM 4226 121 2700) is a crucial component for the fuel system of various Stihl handheld machines, such as the HS45 and HS85 hedge trimmers. Constructed from durable, fuel-resistant black polymer, this cap effectively secures and protects the primer bulb, allowing the carburettor to draw fuel efficiently during the starting process. By preventing air leaks, the Stihl primer pump cap ensures consistent priming, which leads to smoother cold starts and reliable engine performance. Upgrade your Stihl equipment with this essential part for optimal functionality.
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