AIR FILTER FITS BRIGGS & STRATTON 399877S SPECIFICATIONS:WIDTH 4 5/8" LENGTH 4 5/8" HEIGHT 7/8" FITS:BRIGGS & STRATTON 100708; FOR 3.5 HP QUANTUM ENGINES WITH SIDE STARTER REPLACES OEM:399877, 399877S, 4103, 93074, 1204 REPLACES AFTERMARKET:102-541, 003-931, 102-541, 1204, 2417, 261-1241, 2841, 30-720, 4100230, 42417, 7-02255, 801044, AF-0050, B1SB2841, BAF-115, BS399877S, BS41A, SB-2841 Warning:Lead-Nickel-Cancer and Reproductive Harm