Fits Briggs & Stratton Models: 61100, 300, 400, 500 Series prior to Serial 58100060. 61700 Series prior to Serial 5809290. 60100, 300, 400, 500 Series after Serial 5810030. 60700 Series after Serial 5809080. 8B, 80000 Series Aluminum Cylinder 2 & 3 HP Horizontal.
