In general, I'd suggest against cross-referencing filters unless one has to. Sometimes the cross-referencing results are more approximations and "close enough" than truly picking the optimum part number of a given brand for your car. Often you'll cross-reference a Brand X to Brand Y filter and yet find that the Brand Y number you come up with is different than what Brand Y actually recommends in their own catalog. That may be because Brand Y knows that their recommended number is a superior fit or function, or perhaps they're aware of problems/deficiencies with the cross-referenced number. In general, the automakers don't have special filters, but simply relabel other popular brands of filters as their own via sourcing contracts. I think I can safely say there are no "Toyota" filters -- only other brands of filters that have "Toyota" stamped on them per the sourcing contracts. Therefore you may be chasing a ghost.
