Does anybody know the correct tread pitch and size for brake booster vacuum fitting on cannon intake?  It's gotta be something weird because I've tried all sizes and threads.   

I don't know about Cannon, but most sets will receive the original fitting if they do not come with one. 

it is American thread, not metric. I think it is 3/8" npt

Edited January 16, 20187 yr by sweatybetty

I have a set of SK's and like Mr. Purcell said the fitting that came off the factory intake screwed right in to the SK intake. To be sure stop into your local Ace Hardware and find the matching bolt be it metric or standard and then you will know for sure what you need. BTW you have to have the intake with you. Good luck. SK's have a JDM intake though so I was happy but not surprised that it fit.

Edited January 17, 20187 yr by esmit208
Grammar

thanks you guys!