What air filter?

[cody89]

I have a YZ 125 and trying to find the right size air filter. I am pretty sure the carb is a 38mm Mikuni. Do I just buy any "38mm" air filter? What exactly is the 38mm size?

Also, the line that goes from the carb, where does it go to? It is the smaller line. And does anyone know the size of that line?

 

[landuse]

How about some pics?

 

[anderkart]

You just need to measure the outside diameter of the carbs flange where the filter will clamp on, then buy a filter made to fit that size.
This link shows all the different sizes/models of UNI air filters: http://www.unifilter.com/clamp-on/
(I'd recommend UNI's CLAMP-ON DUAL LAYER "POD" FILTER)

Sounds like your talking about the carbs vent line, but some carbs like yours also have a fitting used to connect to a fuel pump. If you post what brand/model# carb you have, we could look it up to make sure.

 

[OzFab]

What exactly is the 38mm size?

Umm, 38mm

If you're asking what I think you're asking, 1.5"