Briggs & Stratton NON GENUINE Air Filter ST1025024 (Genuine part number 49451)
FITS MODELS:
93400, 115400 and 133400
For 3.5 and 5 HP IC and 5.5 HP Van guard engines 
3 1/2'' (88.9mm) W x 7'' (177.8mm) L x 1 1/8'' (28.6mm) HT 
Uses 100-234 pre-filter