I would like a cross reference to other spark plugs for the Autolite 303s. HOWEVER, I'm looking for a plug that has a 5/8" hex instead of the 13/16" hex on the 303s.
Thanks...
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I would like a cross reference to other spark plugs for the Autolite 303s. HOWEVER, I'm looking for a plug that has a 5/8" hex instead of the 13/16" hex on the 303s.
Thanks...