New fuel/gas cap fits older Grasshopper Mowers and Walker Mowers. Not OEM but a direct replacement includes seal
Walker 5082 or Grasshopper 100210
Also fits:
Briggs & Stratton280479, 397975, 493988, 493988S, 794880B, 795027
Cub Cadet751-0603A, 751-0603B, 751-10049