Thank you! I wonder when Bosch moved oil filter production to the U.S. from Germany. From a U.S.-based seller I recently acquired Bosch oil filters made in Germany. The boxes - shop worn - have a copyright date of 2004.
These filters have a white case and no flutes. The part number is: 0 451 103 219. The inner metal sleeve has round holes rather than "louvers".
Do new-in-the-box oil filters deteriorate with time?