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Thread: exhaust leak... no gasket from factory?

  1. #1
    sen2two is offline Cadillac Owners Member
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    exhaust leak... no gasket from factory?

    I just came back from the dealer and they informed me that there is no gasket that fits in between the driver side exhaust manifold and catalytic converter. But when I removed the cat from the exhaust manifold, there was a gasket their. I do not believe it was the correct gasket though. It is unusable at this time anyway. I looked at the diagrams for the car and it also does not show a gasket there. Does anybody know for sure if a gasket is supposed to go in this location? Or is it supposed to be a press seal fitment, metal to metal, after tightening? If this is the case, then the gasket that was there could possibly been the cause of the exhaust leak...


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  3. #2
    Bluehaze07's Avatar
    Bluehaze07 is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by sen2two
    I just came back from the dealer and they informed me that there is no gasket that fits in between the driver side exhaust manifold and catalytic converter. But when I removed the cat from the exhaust manifold, there was a gasket their. I do not believe it was the correct gasket though. It is unusable at this time anyway. I looked at the diagrams for the car and it also does not show a gasket there. Does anybody know for sure if a gasket is supposed to go in this location? Or is it supposed to be a press seal fitment, metal to metal, after tightening? If this is the case, then the gasket that was there could possibly been the cause of the exhaust leak...
    Can you take a picture? It would help to verify what you are asking. I've been removing my exhaust a few times recently and there is no true gasket but, there is some type of high temperature material on the flange that connects the cats to the exhaust manifold.
    Last edited by Bluehaze07; 05-02-13 at 11:45 AM.

  4. #3
    CTSM is offline Cadillac Owners Enthusiast
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    Re: exhaust leak... no gasket from factory?



    This is it, it's FEL-PRO Part # 61525 and it's going for $4.48 a piece from RockAuto.com

  5. #4
    sen2two is offline Cadillac Owners Member
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    Re: exhaust leak... no gasket from factory?

    Quote Originally Posted by Bluehaze07 View Post
    Can you take a picture? It would help to verify what you are asking. I've been removing my exhaust a few times recently and there is no true gasket but, there is some type of high temperature material on the flange that connects the cats to the exhaust manifold.
    I have not been able to take a look since it has been rainging here everyday since I removed it. Hopefully the rain will stop soon so I can inspect the surface for the "high temperature material ".

    Quote Originally Posted by CTSM View Post


    This is it, it's FEL-PRO Part # 61525 and it's going for $4.48 a piece from RockAuto.com
    I really doubt that is the one. The flange has 3 bolts.

    After googling the part number it shows that it is for a 2008+ CTS as well. Thanks anyway.

  6. #5
    Iceman_jd's Avatar
    Iceman_jd is offline Cadillac Owners Fanatic
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    Re: exhaust leak... no gasket from factory?

    This is what I found and it looks to take a round "O" ring type for the 3 bolt flange

    Rock auto exhaust pic of the 2003 3.2l
    http://www.rockauto.com/catalog/more...162&cc=1383544

    eBay Pic. looks to be a metallic crush type.

    http://www.ebay.com/itm/AP-EXHAUST-8...a7c34e&vxp=mtr


    Open the link it show the drivers side catalytic converter. click on the picture to enlarge, notice the inside the 3 bolt flange shows a groove for the "O" ring gasket.
    http://www.autopartswarehouse.com/sk...oc=Driver+Side
    Last edited by Iceman_jd; 05-04-13 at 03:03 PM.

  7. #6
    Bluehaze07's Avatar
    Bluehaze07 is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by sen2two

    I have not been able to take a look since it has been rainging here everyday since I removed it. Hopefully the rain will stop soon so I can inspect the surface for the "high temperature material ".
    yeah I haven't been under there in a little while. I actually think it might be a O ring style gasket.

  8. #7
    Argent1's Avatar
    Argent1 is offline Cadillac Owners Connoisseur
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    Re: exhaust leak... no gasket from factory?

    In the old days it used to be an Asbestos Donut. Not Eco friendly now, lol.


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