Marsflex Air Fuel Ratio O2 Oxygen Sensor Upstream 234-5060 Compatible with Nissan Quest Maxima Murano Altima Armada Frontier Pathfinder Titan Sentra Infiniti M45 QX56 Replacement 226936M400 12499877

Cautions: Please check your vehicle fitment carefully in the product description to avoid any wrong purchase. Please check your part pictures with our pictures, especially the plug, it must be completely same. Or it will not fit your car. Application: Marsflex Oxygen Sensor 234-5060 fit for Nissan 2004-2009 Quest V6 3.5L, 2004-2008 Maxima 3.5L, 2004-2007 Murano V6 3.5L, 2004-2006 Altima V6 3.5L, 2005-2006 Armada V8 5.6L, 2005-2006 Frontier V6 4.0L, 2004-2006 Pathfinder V6 4.0L, 2004 Pathfinder V8 5.6L, 2004-2006 Titan V8 5.6L, 2005-2006 XterraV6 4.0L, 2000-2002 Sentra L4 1.8L. INFINITI 2006-2010 M45 V8 4.5L, 2008-2010 M45 V8 4.5L, 2006-2007 M45 Sport V8 4.5L, 2006-2008 FX45 V8 4.5L, 2006 Q45 V8 4.5L, 2004-2006 QX56 V8 5.6L. Durable and Reliable: Marsflex O2 sensors feature aerospace-grade stainless steel housing & high-temp ceramic core (-40℃~950℃ resistance). Laser-sealed IP67 protection withstands dust/water. Rigorously tested (10,000hrs + 500 thermal cycles) with anti-interference chip for precise signals. 80,000-100,000km lifespan, backed by12-month warranty. Proven durability worldwide!. Easy Installation: Total length 17.9 inch. Manufactured to OE specification fit form and function, durable and easy installation. Warranty: 1-YEAR WARRANTY. ALL Marsflex oxygen sensors are extensively tested during manufacturing to guarantee quality, reliability, and above all, always meet or exceed the original equipment specifications. Improve Fuel Economy: Marsflex oxygen sensor helps optimize fuel efficiency by providing accurate real-time data to your engine’s ECU, ensuring the ideal air-fuel ratio (14.7:1). Over time, old sensors degrade, causing incorrect fuel mixtures (too rich or too lean). Replacing them with a high-precision Marsflex sensor restores proper combustion, potentially improving fuel economy by 5-15% while reducing emissions. For best performance, we recommend replacement every 60,000–80,000 km