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Thread: Header bolt size

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  1. #1
    Join Date
    Oct 2008
    Location
    Houston
    Posts
    807

    Header bolt size

    Lost a header bolt while fabbing up the turbo.

    What size are they ? Can get at auto parts store or have to order from Summit ?
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

  2. #2
    Join Date
    Aug 2008
    Location
    North Texas
    Posts
    12,078
    Sent you a PM. Not sure why the GM catalog doesn't show the size but I think it's 8X1.25...maybe.

    Ooops

    GM changed the number. The number I PM'd you is still in service but has been replaced by 12560206 (doesn't make sense). The price went from $1.65 to $4.16. We have 5 in stock and it's likely if we do, so does everyone else.

    Yes, it's 8X1.25 and about 1.25" long.

    The only difference I see is that most of the older ones (the 1st number is for 2000-2002) have a 13mm head and this one has a 10mm head.

    HTH
    Last edited by GasGuzzler; 11-20-2008 at 03:45 PM.

  3. #3
    Join Date
    Oct 2008
    Location
    Houston
    Posts
    807
    Thanks, found it hiding on the engine cross member under the oil pan
    2002 Tahoe 4.8 - soon to be turbo'd - SOLD
    1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
    2012 Raptor - 497rwhp at 10psi
    If you aint breaking - you aint going fast enough

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