exhaust manifold 325i

Tue Apr 12, 2011 9:17 pm

hi guys I have two exhaust manifolds for my 325i the one on the car has a three bolt flange on the exhaust side and my spare has a four bolt flange . i am just trying to work out the difference and what model the four bolt flange is from. thanks any info will be appreciated.

Tue Apr 12, 2011 9:27 pm

There both for the 6 cyclinder engines. 325 or 320. It doesn't matter there both the same.. Maybe one is for a CAT model and one without... Maybe someone can confirm this?

Wed Apr 13, 2011 9:45 am

I've had two pre-facelift e30s, the 325 had a four hole manifold, the 320 had a three hole one, neither had a cat. Could well be different for facelift e30s though.

Wed Apr 13, 2011 6:12 pm

thanks guys the four hole manifold has larger ports in it. so I will look into fitting it soon