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Thread: TB inlet diameter

  1. #1
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    TB inlet diameter

    Can anyone tell me what the size of the outside diameter is on the TB for an E36 with the 2.5 six? Say I want to remove the airbox and put something else on there, what would be the inside diameter of a coupler that would fit over the TB inlet? Thanks
    Robert
    1999 323i E36 convertible (black, black top, tan interior)
    Newport News, VA

  2. #2
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    Measuring the boot Iím getting roughly 73 to 75 mm

    This is also a great OEM solution instead of the silicone stuff.

    https://www.turnermotorsport.com/p-596281-/
    98 M3 sedan

  3. #3
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    I don't have the car with me, otherwise I'd remove the airbox and figure it out for myself. So I found this picture, and the yellow arrow is pointing to the diameter I'm interested in. Thanks!

    Robert
    1999 323i E36 convertible (black, black top, tan interior)
    Newport News, VA

  4. #4
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    Quote Originally Posted by krab03 View Post
    I don't have the car with me, otherwise I'd remove the airbox and figure it out for myself. So I found this picture, and the yellow arrow is pointing to the diameter I'm interested in. Thanks!

    Thatís the Maf, itís 3Ē
    98 M3 sedan

  5. #5
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    Quote Originally Posted by TheJordanWhitte View Post
    Thatís the Maf, itís 3Ē
    Thanks for the quick reply, appreciate it. I realized after I posted it that I should've been looking at the engine, or at least a picture of it. The MAF inlet was what I was trying to ask about, and I know the TB is something different. In any case, thanks again for the info, I have what I need now!
    Robert
    1999 323i E36 convertible (black, black top, tan interior)
    Newport News, VA

  6. #6
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    98 M3 sedan

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