Walker 250-241314 Oxygen Sensor

Walker OE Base Oxygen Sensor

Walker 250-241314 is a specific-fit, heated narrow-band oxygen sensor built for downstream applications on select Nissan and INFINITI vehicles. It is engineered as an OE-style replacement to deliver the diagnostic feedback the ECU expects, helping maintain proper engine management on vehicles such as the Nissan Pathfinder, Murano, Maxima, and INFINITI QX60.

The OE Base Sensor line focuses on application-specific fitment and sensor position, making it a practical choice when replacing a downstream oxygen sensor on modern emissions systems. Part number 250-241314 is designed for threaded mounting with a 4-wire, rectangular female connector and 22 mm wrench size.

Key Features

• Heated narrow-band oxygen sensor for downstream use
• Specific-fit design for the listed Nissan and INFINITI applications
• 4-wire configuration with rectangular female connector
• Threaded M18 x 1.5 mounting for direct replacement fitment
• Standard replacement grade for emissions and engine management service
• Wiring harness length: 285.00; overall length: 318.00

Product Details

Walker Products has developed this oxygen sensor as an OE replacement for vehicle-specific applications, with attention to fitment position, connector style, and ECU feedback requirements. The 250-241314 is used in downstream locations where the sensor monitors exhaust system performance and supports the vehicle’s emissions control strategy. This part number is listed for 2020-2023 Nissan Murano, Downstream Right; 2022-2023 Nissan Maxima, Downstream Right; 2022-2023 Nissan Pathfinder, Downstream Left; 2022-2023 INFINITI QX60, Downstream Left; 2024 Nissan Murano, Downstream Rear; 2024 Nissan Pathfinder, Downstream Front; 2024 INFINITI QX60, Downstream Front; and 2025 Nissan Pathfinder, Downstream Left. If you are searching for a downstream oxygen sensor for Nissan Pathfinder, Murano, Maxima, or INFINITI QX60 applications, Walker 250-241314 matches the listed positions and connector requirements.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing downstream sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

Confirm the vehicle’s year, make, model, and downstream position before ordering. Inspect the sensor, wiring harness, and connector for physical damage before installation, since damaged components can shorten service life and affect operation. Verify thread size, connector shape, terminal count, and harness routing against the original sensor to ensure proper installation on the Nissan Pathfinder, Murano, Maxima, or INFINITI QX60.

Quality Assurance

Walker Products manufactures engine management and oxygen/air-fuel sensors as OE replacement parts and operates as an ISO 9001/TS 16949 certified company. The OE Base Sensor line is built around application-specific fitment and diagnostic performance for modern ECU-controlled emissions systems.