So, I've been searching and searching and can not find any information on the vacuum line sizes for a 1st Gen Impreza, nor even an older Legacy.  I could find addon kits for the '02+ WRX and some statements about sizes for that car and some newer ones.

 

What I would like to know is the vacuum hose sizes for whats on a 1st gen impreza.  

 

I know some of mine are shot.  They aren't cracked but the ends have stretched and they no longer seat tight which I think is the source of my P0441.

 

Thanks

There are a few different sizes.

Cut the stretched out end off and take the hose to napa and have them match it up.

I was hoping someone would know as I would like to order them from Amazon and not buy locally (there is a huge price difference and usually a quality difference for the price bracket I want to be in).

 

And yes, I could still take it down to NAPA or Oreilly and have it matched, but since I don't intend to buy them there I would really rather not.

 

The lines I'm worried about aren't the larger ones.  It's the smaller ones that run the purge solenoid and other things.

Edited May 10, 201510 yr by lstevens76

Ive always been happy with the quality of napas vacuum hoses.

 

I do know the evap hoses are larger than the ones for the MAP, FPR, EGR etc. Take one of the small hoses and match that up, I wanna say its either 3/32" or 1/8" but I don't remember exactly. (If you take a short enough section sometimes they'll cut you a short piece for free) Then order that size and get the next size up from that for your evap stuff. Probably gonna be 3/16" for that.

Which brings up a pet peeve of mine:  All automotive hoses should be clearly marked for size!