Iltl32 Posted December 10, 2018 Share Posted December 10, 2018 I see mention that there's a sticky with part numbers on this forum, but I opened all the stickies and I can't find mention of the part I need. Sorry in advance. Anyway, it's an '07 Legacy Limited 2.5i. Need the part number for the front O2 sensor. Some sites say Denso 234-9120, and some sites say Denso 234-9123. Which one? Thanks! Link to comment Share on other sites More sharing options...
whitetiger Posted December 10, 2018 Share Posted December 10, 2018 here they are on rockauto https://www.rockauto.com/en/moreinfo.php?pk=1607274&cc=1435931&jsn=2500 22641AA360, 22641AA36A, 32010412 also try http://opposedforces.com/parts/legacy/us_b13/ for OE parts lookup Link to comment Share on other sites More sharing options...
Max Capacity Posted December 10, 2018 Share Posted December 10, 2018 look in here, the recommended parts are there. https://legacygt.com/forums/showthread.php/idea-web-links-saved-various-parts-219238.html 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
apexi Posted December 10, 2018 Share Posted December 10, 2018 Looks like you want 9123 for your non-turbo. Link to comment Share on other sites More sharing options...
m sprank Posted December 11, 2018 Share Posted December 11, 2018 Always use the Denso direct replacement. Link to comment Share on other sites More sharing options...
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