NGK Nissan Altima 2013-2007 Direct Fit 4-Wire A/F Sensor

This is an NGK Air-Fuel Ratio (A/F) sensor, part number 25685. It's designed to work with a wide range of Nissan and Infiniti vehicles, including popular models like the Nissan Altima (2007-2013), Nissan Frontier (2011-2012), and Infiniti EX35 (2008-2010). This sensor is a crucial part of your vehicle's emissions control and engine management system. Unlike older oxygen sensors that just tell the computer if the mix is rich or lean, this A/F sensor gives a precise, linear reading. This allows the engine control unit (ECU) to make very fine adjustments to the air-fuel mixture, helping your engine run at its best for fuel efficiency, power, and keeping emissions low.

NGK, known for its expertise in ceramics, builds these sensors with an advanced ceramic element. This element has a special overcoat designed to resist contamination and deposits, which can often poison or damage other sensors over time. This means you get more consistent and accurate readings for longer. Because NTK is a major OEM supplier, they work closely with car manufacturers from the start of development, ensuring their sensors meet the exact needs of the engine management system.