Poweka Replacement 5pcs 188-13 Primer Bulbs ZF-1 Fuel Filters for Craftsman Poulan Homelite Green Machine Red Max Walbro New high quality aftermaket replacement parts Replacement # P/N: ZF-1 Bulb height: 0. 75"(19mm) Bulb flange diameter: 0.85"(21.6mm) Bulb diameter: 0.725"(18.5mm)