K&N crankcase breather size

[BenV8]

Hi guys,

I would like to install K&N crankcase breather and I'm not sure about the size. is it 1/2" or 3/4" to fit on the PCV? Sorry for my question because I'm sure this question has ask many time but the search function still not work.

many thanks for your help!!

 

[Dig Race]

I would also like to know

 

[AKDMB]

You're gonna want to get 5/8" ID breathers like the K&N 62-1340.

 

[BenV8]

Many thanks for your help!