Carburettor diaphragm lawn tractor mower lawn mower compatible BRIGGS STRATTON For models: BRIGGS STRATTON 255400 , 40A700 , 42B700 , 42D700 , 42E700 , 460700 , 461700 , 253400 , 400400 , 401400 , 401700 , 402400 , 402700 , 404700 , 421400 , 422400 , 422700 , 42A700 Part No.: 30270357 Original part No.: 691873 271025 BRIGGS STRATTON