Got a small oil leak. It is on right side(facing engine standing outside the car), rear head just below valve cover. Looks to be cam position sensor next to a freeze plug. Anyone know the o-ring size? I dont want to pull out to check, put in to drive to store, pull out to fix. Anyone?

 

bumping an old thread, i need this o-ring size plzzz. i found a bunch of threads for 4th gen, i need an o-ring for a 2002-2003 w/ 3.5L

 

Dealer has them, inexpensive.

 

Amazing, thank you i found it. nobody said dealer had them i assumed autozone or advanced auto was the way to go.

Nissan part number 22131-4M505
Price is $2.88 at nissanpartsasap.com

 

I got mine from ACE Hardware for like $0.50 each. I'll grab the barcode or size if I still have the packaging.