View Single Post
Old 05-22-2013, 07:31 AM   #5
Tom Wesenberg
Senior Member
Tom Wesenberg's Avatar
Join Date: May 2010
Location: Mpls, MN
Posts: 27,368
Default Re: Is there Difference between Champion 3X Spark plugs

The diamond knurling pattern stands OUT on original plugs and they go IN on the repro 3X, plus the knurling doesn't run all the way down on the modern 3X.
Tom Wesenberg is offline   Reply With Quote