'66 oil filter cannister bolt head markings - NCRS Discussion Boards

'66 oil filter cannister bolt head markings

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  • Rob A.
    Expired
    • December 1, 1991
    • 2126

    '66 oil filter cannister bolt head markings

    My understanding is that AP and M head marked bolts are considered original for corvettes. Are there any other markings considered correct, or for that matter not correct for corvette applications?
  • Alan Drake

    #2
    Re: '66 oil filter cannister bolt head markings

    Although mine is a 64 the head is marked with a circle only and a small center punch mark. Took it off in 1971 - just getting it ready to go back on.

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