Homelite UP04803 Line Trimmer Primer Bulb Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; UT15106,UT20632-A,UT15107,UT20817,UT15108,UT20818,UT15109,HGT17,UT20779,UT20777,517797680,UT20593-A,74114,UT20774,UT20773,74112,HB-100,74110,ST-185C,ST-485,UT15113-R,UT15180,UT15181,ST285,HT-17,UT15109-1,UT15107-1,UT20623,GST-BC,UT15115,UT20622,517795670,UT15116,UT20621,74125,UT20620,UT20784,74121,UT20780,ST-385C,HGT,ST-175,517297661,UT-20691-R,517797660,UT15169,UT20633,ST-175BC,UT20632,UT20631,74135,517797662,ST-175C,(UT-20581-1),ST-145,UT15114-R This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including; A-01195-A,A-01195,A-01195-A,A-01195,A01195,A01195A,GM197103 Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Homelite This primer bulb (part number UP04803) is for line trimmers Wear work gloves to protect your hands and work in a well-ventilated area during this repair