Fits for: For 2007-2013 Nissan Altima 2.5L For 2008-2013 Nissan Rogue 2.5L Specification: OE:234-4190, 234-9036 Features: *Function 1.The front oxygen sensor is to detect the air-fuel ratio of the engine in different working conditions. 2.The rear oxygen sensor is mainly to detect whether the three-way catalytic converter works normally. * 100% test before shipment. * The reduction of harmful emissions. * The increasing of fuel economy. * The improvement of engine performance. * Prevent premature failure of the catalytic converter. Packaging include: .