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76 911 2.7L RHD Exhaust stud length clarification


MarkT

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Hi,

Hope this is an easy one !

Looking to replace at least 1 exhaust stud but lengths seem to be slightly confusing.

i.e. Parts list M8 x 20mm (99906200602) however, most suppliers seem to sell M8 x 37 ! would I be correct in saying the 8x20 is the same stud as a 8x37 it just does not account for the 17mm of threads that are in the head or in other words the 20mm is only related to the protruding threads and shoulder once the stud is installed. ?

Thanks for a quick confirmation.
Cheers
Mark

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Hi Mark,

I have just replaced a number of studs in some 2.7 heads and the photos show the length. 20mm relates to the length protruding from the head and they are 37mm long in total.

Hope this helps and good luck!

Ian

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