Oregon 43-100 Starter Pulley Replacement for Briggs & Stratton 280439, 280117, 280469 Fits 2, 3, 2.5 and 4 HP engines with side pull starters 80202, 92902 and 110902 series OD: 4-1/8", Use Oregon 43-400 replacement spring Replaces Briggs # 280439, 280117, 280469, 280439S