Denso 234-9127 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor 234-9127

Denso 234-9127 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Nissan and INFINITI applications. It is engineered and tested to OE standards for accurate signal response and a first-time fit on the vehicles listed below.

Key Features

• OE Style replacement air/fuel ratio sensor for precise fitment
• Heated sensor design with 4-wire configuration
• Specific fit application, not universal
• 10.51 in. wiring harness length
• Regular grade replacement part
• Cross-reference: NTK 24783 and Walker Products 250-54102

Product Details

This Denso OE Style sensor is designed for upstream exhaust placement and direct replacement on select Nissan Frontier, Nissan Murano, Nissan Pathfinder, Nissan Versa, Nissan Versa Note, and INFINITI QX60 applications. The part number 234-9127 is built to match OE-style dimensions and connector requirements, helping maintain proper air-fuel feedback for engine management systems.

Compatible With 2013-2019 Nissan Frontier, upstream; 2014-2017 INFINITI QX60, upstream; 2017 Nissan Versa, upstream; 2017 Nissan Versa Note, upstream; 2016 Nissan Murano, upstream; 2016 Nissan Versa Note, upstream; 2012-2015 Nissan Versa, upstream; 2014-2015 Nissan Versa Note, upstream; and 2014 Nissan Pathfinder, upstream. If you are replacing an upstream air/fuel ratio sensor on a Nissan Frontier or INFINITI QX60, this OE Style Denso sensor provides the correct fit for the listed applications.

Common Issues This Part Addresses

• Fault codes related to upstream air/fuel ratio sensor performance
• Rough idle or inconsistent fuel control caused by a failing sensor
• Reduced engine efficiency from inaccurate exhaust feedback
• Check engine light concerns tied to sensor response issues
• Hard starting or drivability problems linked to air-fuel mixture correction

Installation Notes and Tips

Verify the vehicle year, model, and upstream sensor position before ordering. This is a specific-fit sensor with a 4-wire heated design, so connector style and harness routing should be matched to the original part. For best results, inspect the exhaust bung, wiring, and connector condition before installation. The Denso 234-9127 is intended for direct replacement on the listed applications, including select Nissan Frontier and Nissan Versa models.

Quality Assurance

Denso manufactures and tests this OE Style sensor to strict original-equipment standards. The component is precision-built for exact replacement and consistent fitment on the specified Nissan and INFINITI applications.