When I went to the filter store (which sells nothing but filters) this afternoon, the guy there told me they now supply Sakura filters from Japan. Apparently they are an OEM supplier for Daihatsu, Fiat, Hino, Honda, Isuzu, Komatsu, Mazda, Mitsubishi and Nissan Diesel. Looking at a few of them, they have quite an impressive construction (which I've already noticed in OEM Mitsubishi filters). Has anybody happen to have heard about this company?