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collector donut gasket

This is a discussion on collector donut gasket within the External Engine forums, part of the LSx Technical Help Section category; hey guys im running obx long tubes with 3.5 in collectors. my donut gaskets are shot and i cant seem ...

  1. #1
    Junior Member
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    black
    2004 Pontiac GTO

    collector donut gasket

    hey guys im running obx long tubes with 3.5 in collectors. my donut gaskets are shot and i cant seem to find out what size i need. obx offers 3 pages of gaskets in varies sizes all in millimeters. So what size are the donuts??

  2. #2
    Former Mopar Man 2002ssslp's Avatar
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    Silver & Blue
    02 Camaro SS, 04 GTO

    Make your own with sheet copper and you will never have to replace them again.
    My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
    My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k

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    Senior Member kingls1's Avatar
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    1999 Trans-Am, 2012 Sonic

    Quote Originally Posted by 2002ssslp View Post
    Make your own with sheet copper and you will never have to replace them again.
    Interesting, I have the same headers and no leaks but could you explain more on how this is done in case I should have to replace.

    Black04gto:
    I would think if you took the old gasket to a muffler shop they should have one to match, nothing special about them.
    99 Trans Am, SLP Lid, Blackwing filter, smooth bellow, Ported TB, LS6 intake, Ws6 lower ram air box, OBX LT's, Magna Flow cat back, LS7 clutch, Tick MC, Hurst Shifter, Frost Tune, UMI SFC,LAC, STB, PB, Torq Arm, Super Hawk hood, Torq Thrust II, Kee Audio.
    Strange S60 4:10's, D&S Rotors, S/S Brake Lines.
    Nitto NT05R Track Tire's, 12.7 @ 108 / 1.82 60'
    Wish list.
    Coil overs, Heads & Cam

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