04 g35 coupe front O2 sensor oem and part number?
 

I keep getting a code for my front drivers O2 sensor (got the code, reset it to make sure it wasn't in error, came back after 1k miles). I've had luck finding oem 4 wire O2 sensors for other cars I've owned for less than $60 brand new through searching and never had an issue out of them (Bosch/denso/etc.). I can't find the manufacturer for the oem o2's or a non Nissan specific part number. Does anyone happen to know at least who makes the oem sensor?