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Air Filter With Spark Plugs Stamp?

Discussion in 'Tech Tips & Tech Support' started by Mark Wiggins, Dec 5, 2017.

  1. Mark Wiggins

    Mark Wiggins Active Member

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    I just opened up the air filter housing, and the only thing stamped on both ends of the filter says "AC Spark Plug C633C". Is that wierd since it is an air filter?
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  2. simo

    simo Well-Known Member

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    Funny, I found this one on ebay....NOS A633C Spark Plug.jpg
     
  3. Jan Larsson

    Jan Larsson Super Moderator Staff Member

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    Yes that is correct as that was the AC brand "slogan" used on everything ... until they became AC Delco :)
     
  4. Mark Wiggins

    Mark Wiggins Active Member

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    So this could be original AC?
     
  5. Jan Larsson

    Jan Larsson Super Moderator Staff Member

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    It’s an original AC filter and most likely period correct (so before AC Delco time).

    Meaning time for a new filter ;)
     
  6. Mark Wiggins

    Mark Wiggins Active Member

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    I'll put in a new one certainly! This one is actually fairly clean! I still don't know why they put spark plugs on it though...

    Thanks for everything!
    Mark
     
  7. Jan Larsson

    Jan Larsson Super Moderator Staff Member

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    The company name was AC Spark Plug Division and they made not only spark plugs so that company name appeared on everything they made ...
     
  8. Mark Wiggins

    Mark Wiggins Active Member

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    Okay, brain is in gear now... That clarifies it.

    Mark
     

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