Spark Plug fits Various Makes Models Listed Below AL3116 AL386 M10AC0

Plug uses 18mm thread by 1/2" reach by 7/8" hex. Replaces Champion #'s: D10, K13, D14, M14, RD14, K15J, D16, D16J, RD16, UD16, D21, D89D. Replaces Autolite #'s AL386, AL388, AL3116. Included in Atlantic Tune-Up Kits 1200-5071, 1200-5072, 1700-5050, 1700-5052, and 1700-5053.Fits Various Makes models Replaces AL3116 AL386 M10AC0