FitBest Carburetor 308054001 with Gasket Primer Bulb for Homelite UT-21506 UT-21907 UT-21546 UT-21566 UT-21947 String Trimmer Replacement manufacturer part number: 308054001 Fits Homelite 26cc UT-08580 UT-08981 Blower UT-50500 UT-50901 Edger Fits Homelite UT-21506 UT-21907 UT-21546 UT-21566 UT-21947 UT21967 Mightylight String Trimmer Package includes: 1x carburetor, 2 x primer bulbx, 2pcs x gaskets