Auto Parts: 2000 Nissan Infinity G20t, fuel pressure regulator, nissan infinity

Question
How do I find out what the OEM number is for a pressure regulator for this car?

Answer
Are you asking about the fuel pressure regulator?  Either way, sometimes you can go to the parts counter at your local dealer and ask for the part you're looking for.  Once they find it, kindly ask them for the OEM part number.  If they're in a good mood, they'll share that part number with you.  :)