Features: 10pcs Snap In Primer Bulb Pump For Homeliter STHIL Ryobi ECHO McCulloch Poulan fit 45cc 52cc 58cc 5200 5800 Chainsaw Carburetor New snap in primer bulb assembly for Pouland,Homelite,Sears,Craftsman Chainsaws,Blowers,Pressure Washers Weed Whackers and Trimmers that have the snap in Primer assemblies. Fits the following models: Refer to part Numbers 01183 UP04033 300780001 300780002 300780004. Bin Number 188-512. Height:33mm/1.3inch Wide: 21mm/0.83nch Package Included: 10 * Primer Bulbs Brand Unbranded MPN 01183 UP04033 300780001 300780002 300780004 Type Primer Bulb .