Beveled Gaskets To Prevent Exhaust Leaks

gaskets1gasket2You know that new crush gaskets should be used when installing new exhaust headers. And when you do, it’s a good idea to use beveled pipe gaskets. The bevel edges tend to center the exhaust header pipe in the exhaust port, preventing the risk of leaks. For all Harley-Davidson motorcycles. Sold in pair. $13.95. At .

10 Responses to “Beveled Gaskets To Prevent Exhaust Leaks”


  1. 1 Rob Dec 9th, 2014 at 2:15 pm

    Looks good,but i use copper.

  2. 2 Heavy Metal Dec 9th, 2014 at 4:06 pm

    They look the same as factory HD’s to me.

  3. 3 J.H. Dec 9th, 2014 at 10:41 pm

    And what is the difference from H.D.’s – Lower price?

  4. 4 Rogue Dec 10th, 2014 at 7:54 am

    I use the beveled gaskets and by using a tool made by “JIMS” part number #788 it is very easy to install them.

  5. 5 jim Dec 10th, 2014 at 8:12 am

    Only James exhaust gaskets for me. The tapered type of gaskets tend to push into the port opening and restrict/interrupt air flow.

  6. 6 BadMonkeyMW Dec 10th, 2014 at 10:31 am

    Good job marketing something H-D has been selling for decades.

  7. 7 Drew Dec 10th, 2014 at 12:21 pm

    The issue I have found on occasion is that the “beveled” gaskets can squish into the exhaust port, thus blocking exhaust flow right in the port. Though it may be but a minor issue it can will effect the engines ultimate performance. It is especially noticeable on heads with exhaust ports that have been enlarged.

  8. 8 HD Rider Dec 10th, 2014 at 3:29 pm

    It sure does look the same as stock H-D — I’ve seen those squish into the exhaust port too. I switched to the H-D SE gaskets that don’t squish into the port. Now I’m using tubular steel gaskets that come with some aftermarket exhausts..

  9. 9 John p Dec 10th, 2014 at 8:43 pm

    Junk !
    Haven’t used those in 20 years !
    Like most of the comments here they restrict the exhaust flow because they squish into the port!

  10. 10 Chris Dec 11th, 2014 at 9:31 am

    I have used the beveled seals with varying degrees of success. I have had these squish into the port as others have reported, but in my case, it was clearly a matter of not having the pipe properly aligned rather than a design flaw. I’ve also wrestled with exhaust systems and struggled to get them on to fit with these. Throw in a set of good old fashioned square gaskets and the pipes drop right on.

    I believe that these gaskets seal better when set up correctly, but it seems to be a solution in search of a problem.

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