Replacement Briggs & Stratton Air Filter. Fits Briggs & Stratton 2-5 HP Horizontal Shaft Engines, Series 60000-80000. Air Filter Dimensions: 5-1/2" x 4-7/8" x 1-1/2" Item: BAF-110, 27987 O.E. Replacement Part Number: 27987 , 27987S , 5001 , 5001B , AM-34963 , LG27987 , LG27987S , 30-906 , 100-511 , 1370 Features Fits Briggs & Stratton 2-5 hp horizontal shaft engines, series 60000-80000 Replaces OE # 27987 Contains one air filter