LT4 Engine Oil Drain Plug - NCRS Discussion Boards

LT4 Engine Oil Drain Plug

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  • Bill M.
    Extremely Frequent Poster
    • March 31, 1977
    • 1386
    #31
    Re: LT4 Engine Oil Drain Plug

    Originally posted by Joe Lucia (12484)
    Bill-----


    That nylon gasket may be what's there now, but I don't think it was always there. Has the car ever been to a "quick lube" sort of place for an oil change? If so, they probably replaced it.

    I believe the nylon gasket was last used for the 1987 model year, if it was even used that late. The gasket used since then is a "composition"-type gasket composed of what I believe is a tin frame with a bonded fluroelastomer seal. It's GM #14090908 and it seals better than a nylon gasket (but nowhere near as good as the integral seal-type plug).
    Joe:

    You got it right...again. My '92 has the 14090908. Thanks. (I should have had my glasses on when I changed the oil!)

    Bill
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