[SkyDog]

To confirm, one of our fellow forumites posted a screenshot from Snap-On software showing the 90915-YZZS1 listed as a supercession for the original GR86 filter part number.

That filter’s been the official part for the first-gen 86 & FR-S for years. The filtering requirements for those cars’ FA20 engine are practically the same as our FA24. It’s a compatible filter, and the mount/threading is the same. It’ll work just fine.

Why Toyota recently decided to use it for the second-gen GR86 as well, I don’t know. Maybe it’s just to stock one less SKU, or to get them through one of Toyota’s preferred suppliers.

If you’d prefer the ‘original’ filter for the 2022+ cars, you can still pick it up from Subaru as part # 15208AA170.

 

[SkyDog]

The pressure relief spec is different on the 2nd gen Subaru filter vs 1st gen…

Can we find definitive statements on that? I’ve seen it claimed on forum posts, but nothing authoritative.

But those forum posts are contradicted by others. I found references (with Subaru citations) that claim the 15208AA170 filter spec’d for the second-gen BRZ has a 23.2 PSI bypass valve rating. I’ve found other posts from 2015 or so claiming 23.2 PSI was the norm for Subaru.

 

[SkyDog]

If they're the same then maybe Toyota is just weird...

I’d guess it’s more likely to be “cost effective” than weird.

The Subaru filters are made by Tokyo Roki or Fram. Subcontracted and independent. The Toyota-branded filter is made by Denso, which is a Toyota Group company. Toyota Motor Company and Toyota Industries own a significant stake in Denso — about 35% combined — and Denso has close ties to Toyota as a supplier.