I know this is not what you asked but just FYI, STP filter no. is: S10385. I got one at the local Auto Zone because it came with a deal of 5 qt 0W-20 and a filter for $32.
Try this: Replace Pts>Filter Parts and Accessories for 2010 Toyota Prius or this: http://cgi.ebay.com/ebaymotors/New-...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories Greg
I ordered from the ebay link a few weeks ago, genuine filters and quick delivery from a real Toyota dealer. Wayne
Here is what I found on the FRAM site, thought it was handy that they listed the part numbers for their competitions' products as well. Part Number CH10358 ZoomCH10358_031909.jpg Product TypeFull-Flow Lube Cartridge Product Height2.23"Product I.D.1.11"Product O.D.2.39"Style Code440 Applications Where Used PONTIAC TRUCK Vibe 4-1.8L F/inj. (16V) DOHC 2ZR-FE (8) [2010-2009] SCION xD 4-1.8L F/inj. (16V) DOHC 2ZR-FE (U) [2009-2008] TOYOTA Corolla 4-1.8L F/inj. (16V) DOHC 2ZR-FE (L) [2010-2009] 4-1.8L F/inj. (16V) DOHC 2ZR-FE (U) [2010-2009] Matrix 4-1.8L F/inj. (16V) DOHC 1ZZ-FE [2008] 4-1.8L F/inj. (16V) DOHC 2ZR-FE (U) [2010-2009] Competitors AC-DELCO PF1768 CARQUEST 84064 CHAMP P980 GENERAL MOTORS 19185485 LUBER-FINER P980 NAPA 7064 PUROLATOR L16311 SECURITY CF6311 TOYOTA 04152-37010 TOYOTA 04152-YZZA6 WARNER WP980 WIX 57064