Hey guys, just wanted to share my recent findings:
S14 SR20DET oil filter is same as 95+ Sentra SE-R (SR20DE) and a USDM 350Z from what i found online.
Dont remember OEM part #, but here is a FRAM # PH6607
If you want a larger capacity oil filter, Subaru has the same O-ring diameter and thread, but the filter is ~1/2" taller and 1/2" wider!
Filters tested from 2002-2005 WRX (2.0 turbo EJ205) and 04-07 STI (2.5 turbo EJ257). FRAM # PH3593
Didn’t test this, but sure it will work, filter from base RSX, same diameter as the SR, but is 1/2" taller. FRAM # PH7317
So I recommend to get some oil filters from a Subaru dealer (Budd’s Subaru in Oakville is usually very friendly).
Please don’t go into a debate over FRAM filters… But any other comments are very welcome!
Be careful with this… KA and SR filters have the same o ring diameter as well. Its the depth of the filter thread point (not sure if I explained that well). What I mean is the KA one will bottom out on the threads before the o-ring is tight.
Also you may not even notice the filter leaking at first. It may take until the oil is up to temp and you push it to higher pressures.
I know this from a presonal experience, not one of my brigthest moments back in the day. But I had an oil pressure gauge which saved my ass.