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the right spark plugs

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  • the right spark plugs

    in my 74 sporty i have #4 hd plugs in it it has 5,340 miles on it are they the plugs that came stock if not what plugs were stock? The bike sat in a barn since 1982 it looks to be stock

  • #2
    Your Sportster was delivered with number 4 plugs. They are the correct heat range for the bike.
    VPH-D

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    • #3
      thanks for the help

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