Going through the piles of parts I bought at an auction, I have run across a few items I need help with. I got some spark plugs and the four on the bottom have the words "Champion" and "Ford" on them. They look just like the Champion X ones in the top row but have two company names on them "Champion" and "Ford". So what can anybody tell me why there are two company names on them, are they factory originals?
Guessing a bit here - I think the Ford marked Champions were spark plugs Champion made for Ford to put in their new cars on the line in the 1919-27 period, while the Champion X marked plugs were made to sell at general auto parts stores and later after Model T production stopped. Ford dealers mat have had Ford marked Champions even some time after T production ended?
This may shed some light: