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spark plug

  1. 262ci Forum (4.3)
    I have a 1995 4.3 V6 Vortec s10 that I want to fix up. I want to change its plugs for good iridium spark plugs. I have seen many sites (carid,parts geek,even MSD) and all say the size 14mm and other measurements. Of course I’m not understanding them and I was wonder what are the exact...