GASKET SERIES Description: QUANTUM POWER 121700, 122700, 124700, XT, XTE, XTL engines up to 1997. for models: 121700 , 121800 , 122700 , 122800 , 123700 , 123800 , 124700 , 124800 , 125700 , 126700 , 126800 , 129800 , 220700 , 251700 , 252700 , 253700 , 254700 , 255700 , 256700 , 257700 , 129700 Part No. : 320023 Original part No. : 496117, 493263 BRIGGS STRATTON