O2 Oxygen Sensor Upstream For 2004 05 2006 2007 Nissan Altima Infiniti G35 3.5L

Upstream O2 Oxygen Sensor for Nissan and for Infiniti

This upstream O2 oxygen sensor for Nissan and for Infiniti measures the oxygen content in exhaust gases to help optimize fuel-to-air delivery.

Overview

This upstream O2 oxygen sensor for Nissan and for Infiniti monitors exhaust composition to help the engine control module calculate the correct fuel mixture. Mechanics install this upstream O2 oxygen sensor for Nissan and for Infiniti to cure rich-running engines and pass emissions inspections. This sensor plays a critical role in maximizing fuel economy and reducing raw emissions.

Built For Performance

• Double laser-welded stainless steel body keeps out contaminants
• Fast-acting internal heating element ensures quick closed-loop activation
• Fluoropolymer-coated wiring sleeves protect against extreme exhaust heat
• Thread-coated with anti-seize compound to facilitate clean installation

Fits These Machines

• for Nissan Altima 3.5L (2004-2007)
• for Infiniti G35 3.5L (2004-2007)

On-The-Job Use

• Optimizing engine air-to-fuel ratio calculations
• Resolving diagnostic trouble codes related to upstream oxygen sensing
• Restoring fuel economy and reducing exhaust emissions

Specs At A Glance

Good To Know

Q: Why is the upstream sensor critical for performance? A: It actively measures oxygen levels before the catalyst so the computer can adjust fuel trims.

Q: Does this sensor include the wiring connector? A: Yes, it comes with a factory-matched electrical plug for a direct connection.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.