Hondata

does the 03 Accord front A/F O2 work with Kpro? The part numbers are very close 36531-PRB-A01 (RSX-s) 36531-RAA-A01 (K24 Accord)

With Honda part numbers, the first 5 numbers describes the part (36531 = front o2 sensor), the second 3 digits is the model the part was introduced on (PRB = RSX, RAA = Accord) and the last 3 characters is the revision.

The PRB and RAA o2 sensors may be similar, or they could be very different, but they are not the same otherwise they would use the same part number.

so if we run Kpro in an Accord (or any other K car thats not the RSX) do we have to get the RSX type-s O2? Or like the Element 36531-PZD-A01

The only sensors known to work 100% are the 02-04 RSX, 02-05 SI and the 02-04 CR-V.