The Wix 57712 has the 23 psi by-pass spec and I believe is a substitute for the Subaru . . .AA12A, which is used on the H4 sohc Subaru engines. But I'm not sure if it's listed for the 2.5 turbo.

Compare prices. The WIX filter is sold up here only at auto parts stores and is more expensive than the Subaru filter at my dealer. Other on-line Subaru parts suppliers, such as Subaruonlineparts.com, often have bulk prices on the Subaru filters and/or free shipping. They might turn out to be equal, or less, than other brands you can get locally.

 

Excellent! the nasioc guys say they run the Wix/napa 57712 on the wrx's so it will do perfect for now in tell I find a filter I like and buy in bulk for discount... didn't feel like I was getting a bulk discount at fredbeans. super excellent place though.

 

I use the Mann ml1014, under $3 each from rock auto. I usually buy a years' worth at a time along with other stuff I know I'll need just to keep the shipping down. They work great, no complaints.

 

Have you tried to find the Subaru filter on any of the online sellers like subaru parts online, Amazon or ebay?

 

I did a quick search on the Mann ml1014, couldn't find the bypass psi... it just says yes :/

 

Yeah, I don't know what it is either. Not printed on the can, the box or the website. Some people have figured out what it is for some of their other models, but I don't have access to a test rig or data from one.

I chose not to concern myself with it and focus on feeling good about saving a few pennies over the past 20k miles. Changing every 3750 to keep up with a turbo means these things add up, and I don't even drive that many miles per year.