Thread: What is the ID of RRC 92 brake vacuum hose

Seeing I am replacing the master cylinder, I had better replace the vacuum hose as it is hard at the engine end , and short as I have already cut a bit off to get to softer stuff.
I measured it at 9MM at the booster end but this may be inaccurate as it may have stretched over the nipple and I cannot cut any more off to get to unstretched hose .
I see some 9MM on ebay for $10 a metre .

Regards Philip A

3/8 inch (9.5mm) or 11/32 inch (9mm) nominal. It's rubber, it'll stretch or fit with a clamp or two.