[knightrider]

um, the dealer can get a part for any nissan, they prolly wont want to do the work though, and it would take a while, also, japanese cars didnt have obd1 or obd2, its a USDM thing, do you happen to have the old o2 sensor? i would take that in with you, and clairify that its not a fwd ser sr20, tell him its a japanese sr20. im not sure how many wires the sr20 o2 sensor is, but ill bet its a 4 wire, and prolly a 14mm thread, not the 18mm thread size of the KA24's