Topic: VACUUM LINE SIZE HELP

[HONDA 550-K]

Can someone please tell me what size is my vacuum line coming from the carb to the petcock is.
I looked it it up on cheap cycle parts .com and they will only sell it in bulk at $87.00 I do not need that much. So if someone could tell me what size the vacuum hose is I would be very grateful.

My bike is a 1993 Honda 750 nighthawk.

Thanks  Dean

[david 750f]

Partzilla shows it as 3.5mm (inside diameter) hose. That’s a very common Honda size. Same size for carb vent lines.

https://www.partzilla.com/product/honda/95005-35008-10M?ref=8adb0b3270e9977dfafdfda6b6f5537a14fbf01f