Universal Spark Plug Plug Uses 14mm Thread By 7/16" Reach By 13/16" Hex. Replaces Champion #h14y
Catalog Number: 4P357
Plug uses 14mm thread by 7/16" reach by 13/16" hex. Replaces Champion #H14Y, H18Y and Autolite #AL437, AL782. Used in Atlantic Tune-Up Kits 309786 and 309787. 1939~50 w/front mount distributor.
Part Reference Numbers: AL437;WR9FC