ApplicationCompatible for Nissan Altima 3.5L 2004-2005 compatible for Nissan for Maxima 3.5L 2004-2008 compatible for Nissan Murano 3.5L 2004-2007 compatible for Nissan Quest 3.5L 2004-2006Specification- Type: Oxygen Sensor - Pin: 4,4,6,6 - Position: Upstream & Downstream - Package Include: 4Pcs Oxygen Sensors(Upstream & Downstream) as Pictured - Warranty: one year warranty for any manufacture defect - Condition: brand newFeature- Our oxygen sensors are designed to determine the oxygen content of the exhaust gas and to improve the fuel efficiency of the vehicle. - With high quality materials that ensure improved performance and long lasting durability. - These sensors facilitate easy installation and are corrosion resistant. - Tough and highly efficient oxygen sensor is a must for vehicles used for off road applications. - Our oxygen sensor is one of the good choices that you can include on top of your list. - Our top quality oxygen sensors can boost the optimum capacity of your car.NotePlease check OE# with listed pictures above and make sure it fits for your vehicle.