The original filter is made by Denso in Japan for Toyota. The YZZF1 is made in Thailand for Toyota North America, hence the difference. Try a Mobil 1 filter size M1-209, it will fit almost all Toyota engines that take the YZZF1 and YZZF2 filters. Same specs as the Toyota filters, just a lot more media surface area. I use it on my '05 Prius. Just make sure the gasket seats on the engine properly since it is a little wider.

Wayne