Walker 250-24453 Oxygen Sensor

Walker Products OE Oxygen Sensor 250-24453

Walker Products OE 250-24453 is a heated oxygen sensor built for specific downstream and upstream applications on select Nissan, Infiniti, and Nissan Sentra models. It is engineered as an OE-style replacement that delivers the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor design for faster operating response
• Specific fitment for the listed vehicle, engine, and sensor position
• 4-wire configuration with a 20-gauge harness
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon connector with male terminal design
• 16.06 in. wiring harness length and 19.61 in. overall length

OE-Style Replacement Details

Walker Products OE focuses on original-equipment replacement sensors for a wide range of vehicles worldwide. Part number 250-24453 is built for the exact application and sensor location, including downstream right, downstream left, downstream, and upstream positions where listed. For drivers servicing a Nissan Armada oxygen sensor, Nissan TITAN downstream oxygen sensor, or Infiniti QX56 oxygen sensor application, this part is designed to restore the feedback the ECU uses to manage emissions and engine operation.

The Walker Products OE line is backed by the company’s long-running engine management and fuel system experience. Since 1946, Walker Products has supplied sensor and fuel system components for automotive repair markets, with ISO 9001/TS 16949 manufacturing standards supporting product consistency.

What This Oxygen Sensor Helps Address

• Check engine light or MIL illumination related to oxygen sensor faults
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation tied to inaccurate air-fuel readings
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes for the affected sensor circuit or system

Installation Notes and Fitment Tips

Compatible With 2013-2015 Nissan Armada, downstream right and downstream left; 2013-2015 Nissan TITAN, downstream right and downstream left; 2005-2012 Nissan Armada, downstream right and downstream left with OE headers; 2008-2012 Nissan Pathfinder, downstream right and downstream left; 2004-2012 Nissan TITAN, downstream right and downstream left with OE headers; 2004-2010 Infiniti QX56, downstream right and downstream left; 2004-2006 Nissan Sentra, downstream; 2004 Nissan Pathfinder Armada, downstream right and downstream left; 2003 Nissan Sentra, upstream and downstream; and 2002 Nissan X-Trail, upstream.

Before installation, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the sensor position, thread size, and connector style match the original unit before tightening into the exhaust system. This part number is 250-24453.

Quality Assurance

Walker Products OE sensors are manufactured for application-specific fitment and ECU feedback requirements. The brand’s ISO 9001/TS 16949 manufacturing background supports consistent production standards for replacement oxygen sensors such as 250-24453.