New Spark Plugs from Ford?
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Member
Joined: May 2006
Posts: 19
Likes: 0
From: Green Bay, WI
New Spark Plugs from Ford?
Did a search with no luck, has anyone heard of an updated spark plug from Ford? I was shopping for plugs online SP-515 when I ran across a new Part number. SP-546.
Member
Joined: Jun 2016
Posts: 30
Likes: 1
From: Norfolk, VA
Just googled it. another forum mentioned that it supersedes the SP-515 . But, because its so new the ford parts system hasn't caught up with updating the part numbers. The new 546s dont have the weld joint near the threads. Probably further trying to eliminate any risk of the plug breaking off into the head.
