Oxygen Sensors for Nissan Altima (2007-2013) 3.5L Downstream

Direct-Fit Downstream Oxygen Sensor Pair for 2007-2013 Nissan Altima

What it Does: The Downstream Oxygen Sensor Set monitors post-catalytic converter exhaust gas chemistry on the 2007-2013 Altima to ensure proper catalyst efficiency monitoring, precise secondary fuel trimming, and clean emissions compliance without check engine lights.

The Stock Nissan Altima Sensor Degradation

Factory downstream oxygen sensors on the L32 and D32 platforms endure severe thermal cycling and constant exposure to exhaust carbon and sulfur compounds. Over time, the internal zirconium dioxide planar element suffers chemical poisoning and structural thermal fatigue. This leads to sluggish voltage switching times and false catalyst efficiency diagnostic trouble codes (DTCs such as P0420 or P0430). Furthermore, degraded internal ceramic heating elements frequently fail, delaying closed-loop readiness and throwing heater circuit faults that force the ECM into rich fuel trims, unnecessarily reducing fuel economy.

The Engineering Solution

Engineered to exact OEM specifications, these 2-piece downstream heated oxygen sensors (HEGO) incorporate high-grade, fast-reacting ceramic thimble elements housed inside laser-welded, double-layered 304 stainless steel protective shells. This dual-shielded architecture shields the sensing core against particulate contamination and thermal shock. Pre-installed factory-grade harness wiring with heat-resistant sheathings and OE-correct pinouts ensure seamless signal integrity to the vehicle ECU, restoring factory switching speed, stabilizing secondary fuel trims, and resolving lingering downstream emission DTCs.

Technical Specifications

Compatibility

• 2007-2012 Nissan Altima Base, S, SE, SL, SR 3.5L V6 (Sedan - L32)
• 2008-2013 Nissan Altima SE, SR 3.5L V6 (Coupe - D32)

Frequently Asked Questions

Does this fit the L32 Altima?
Yes, this is a direct fit for the 2007-2013 Nissan Altima equipped with the VQ35DE 3.5L V6 engine in both Bank 1 and Bank 2 downstream positions.

Will these sensors clear catalytic converter efficiency trouble codes like P0420/P0430?
If the code was triggered by a failing or slow-switching downstream sensor heater or element, these replacement units will restore proper signal response and allow the ECU to reset emission monitors.

The Nissan Precision Standard

Maintain the signature responsiveness of your VQ35DE powertrain by eliminating faulty closed-loop sensor readings and ensuring optimal air-fuel calculation across the entire RPM range.