I bought some from the same place and that is what I noticed right away was there was no metal anround the plugs. It is hard to tell how well they work since my engine was going out when I ordered them. I have now rebuilt the engine and I hope to fire it up this evening. Also when I used Bosch 4 platinums they semmed to work well. I wondered if I should have splurged some more and got the magnecors. Just trying to update spark to the plugs for performance and better starting in the upper midwest.
|