Haha, nice one. I knew I'd get yet further reassurance by asking on here.
A quick google reveals a Youtube comment with some useful info on the bulletin code:
12 days ago
They are not counterfeit.
TOYOTA issued a PANT (Parts and Accessory News Today) Bulletin 2023-003 on January 13th. It states "there has been a spec change" and that they are "utilizing a new material, resulting in a physical paper color change"
Affected PN's:04152-YZZA1, YZZA3, YZZA4, YZZA5, YZZA6, YZZA7
It also states "Although the new filter material has changed, the current filter continues to meet Toyota's strict performance standards. You may receive a filter with the original material as we work through existing inventory"After asking our parts manager (I am a dealer tech) about the change he said the change most likely happened due to factors outside Toyota's control, at the vendor/ supplier level in the manufacturing chain, and there was not enough of a difference to justify updating the part numbers.I agree they do look like the aftermarket filters which have always been that orange color. I wonder if Toyota changed suppliers and now uses the same source for filter paper as the aftermarket ones always have? Either way, I'm sure their filtering performance is adequate and they're still valid for warranty purposes so I wouldn't be concerned about the color change.If you really want to, try ordering PN 04152-31110 instead of 04152-YZZA1. I believe that is the part number for the factory installed part. Oil filters, engine air filters, cabin filters, wipers, brake pads and some other parts have different part numbers for the ones installed at the factory vs the "market-value-priced" parts indicated by a YZZ as the first 3 digits of the second half of the part number.
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