Oxygen Sensor for 2005-2006 Nissan Altima & More - Bosch 15521

Bosch 15521 oxygen sensor for the 2005-2006 Nissan Altima V6 3.5L and other vehicles sends air-fuel-ratio readings to the ECU. As a narrow-band heated sensor, it helps the ECU hold combustion steady and keep emissions down.

• Reaches operating temperature in under 10 seconds for quick closed-loop control and cold-start performance
• Narrow-band heated design with an integrated heater element
• Metal housing with TSP coating to resist vibration, corrosion and contamination
• Built to withstand exhaust streams up to 1,880°F
• Ceramic elements and optimized heater control for consistent performance under harsh thermal loads

Quick facts

• Part: Bosch 15521 oxygen sensor
• Fits: the 2005-2006 Nissan Altima V6 3.5L and other vehicles
• Position: Downstream, downstream left, downstream right, downstream rear
• Material: Metal (housing)
• Condition: New

A vacuum leak, an exhaust leak or a misfiring cylinder can trigger the same check engine light, rough running or poor fuel economy that a worn oxygen sensor can, so find the cause before you buy one.

Fits

This sensor is listed for a wide range of Nissan and Infiniti models, including the 2004-2007 Nissan Maxima V6 3.5L and the 2004-2009 Nissan Quest V6 3.5L. Open the Buyer's Guide tab and look up your own model and engine before you order.

Specifications

In the box

One oxygen sensor with its wiring harness. This listing is one sensor, and each application in the fitment takes one. A mounting bracket is not included, so plan on a new bracket rather than reusing an old one if yours needs replacing.

Installation notes

• Anti-seize is pre-applied to the threads.
• Direct-fit connectors are made for quick installation.