2 PISTON RING SETS, GASKETS & SEALS FITS BRIGGS & STRATTON 350400, 350700, 351700, REPLACES BRIGGS & STARTTON PART NUMBERS 843793, 807889. FITS BRIGGS & STRATTON TWIN CYLINDER VANGUARD ENGINES WITH A 72MM BORE 2.835. NOTE: THESE HIGH QUALITY MADE PISTON RINGS ARE NOT MADE IN TAIWAN OR CHINA.