4pcs O2 Oxygen Sensor Upper & Under for 2002 2003 Nissan Maxima 3.5L

brought to you by 1a auto calm your source for quality replacement parts and the best service on the Internet hi I've gone from 1 a.m. I hope this how-to video helps you out and the next time you need a part for your vehicle think of 1a auto calm thanks in this video we're going to show you how to replace an upstream Oh 2 sensor on this 2003 Nissan Altima with the 2.5 liter 4-cylinder engine the items you'll need for this is a new upstream o2 sensor from 1a auto calm a flat blade screwdriver a 7/8 inch o 2 socket from 1a auto calm and a ratchet and in our worst case scenario we'll also need a pair of wire cutters and a regular 7/8 inch socket because of the location of this o2 sensor you can't actually use 7/8 inch wrench you do need this special socket with the cutout that accommodates the wires on the o2 sensor it's the only way to reinstall a new o2 sensor on this particular vehicle