2-PC Upstream & Downstream Oxygen Sensor Set For Nissan Sentra, Altima, Versa, Maxima, Cube 2008-2012 (3.5L, 2.5L, 2.0L, 1.8L)

Is your Check Engine light on for an O2 sensor? This 2-piece set includes both the upstream and downstream oxygen sensors for several Nissan and Infiniti models from 2008-2012. Covers vehicles like the Sentra (2.0L, 2.5L), Altima (3.5L), Versa (1.8L), Maxima (3.5L), and Cube (1.8L). The upstream sensor is part number 234-9039 (also crosses to 22693-1AA0B, etc.), and the downstream is 234-4380 (crosses to 22690-EN200, etc.). Both are heated 4-wire sensors with male connectors, but wire lengths and thread specs differ slightly. Important: these are direct-fit replacements, but professional installation is recommended. Always compare the plug and thread size to your old sensors before buying to ensure a perfect match. Fixing faulty O2 sensors can improve fuel economy, reduce emissions, and restore engine performance. Keep your Nissan running smoothly with this complete sensor pair.