The filter that they installed also fits other Subaru models. Go to the dealership and tell them what you want and I am sure they will sell you what you need. They should be $12 to $15. Others have put on a PermaCool canister type filter that works good too. They are about $40 for the kit, but the filter is only $4 or $5 to replace. It looks like an oil filter. Look in the How-To Docs under transmissions. Good luck.