Walker 250-241312 Oxygen Sensor

OE Replacement Oxygen Sensor for Nissan and INFINITI

Walker OE Base Sensor 250-241312 is a heated narrow-band oxygen sensor built as a specific-fit replacement for select Nissan and INFINITI applications. It is engineered to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.

Use this Walker oxygen sensor when servicing downstream sensor positions on vehicles such as the Nissan Pathfinder, Murano, Maxima, and INFINITI QX60. Part number 250-241312 is matched to the listed application and connector style for direct replacement service.

Key Features

• Heated narrow-band oxygen sensor for OE-style engine management feedback
• Specific-fit design for the listed downstream positions
• 4-wire configuration with rectangular female connector
• Threaded mounting with M18 x 1.5 thread size
• Standard replacement grade for emission control service
• Walker OE Base Sensor line for application-specific sensor replacement

Product Details

Walker Products develops engine management and oxygen/air-fuel sensors as OE replacement parts for a wide range of vehicles. The OE Base Sensor line focuses on application-specific fitment, connector style, and sensor output so the replacement part aligns with the vehicle’s diagnostic strategy. Part number 250-241312 is designed for downstream sensor locations and uses a 4-wire heated narrow-band design with a spade terminal type, male terminals, and a threaded M18 x 1.5 mount.

Compatible With 2025 Nissan Pathfinder, downstream right; 2022-2023 Nissan Pathfinder, downstream right; 2024 Nissan Pathfinder, downstream rear; 2024 Nissan Murano, downstream front; 2020-2023 Nissan Murano, downstream left; 2022-2023 Nissan Maxima, downstream left; 2024 INFINITI QX60, downstream rear; and 2022-2023 INFINITI QX60, downstream right. This part number, 250-241312, is also a direct reference point for shoppers searching by OE-style replacement fitment on Nissan Pathfinder and Murano applications.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback to the ECU
• Poor fuel economy caused by a failing downstream sensor
• Elevated exhaust emissions from inaccurate sensor readings
• Rough engine operation tied to emission control faults

Installation Notes and Tips

Before installation, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals. Confirm the downstream sensor position, thread size, and connector shape match the original part before replacement. If the vehicle stores fault codes, clear them after repair and verify the system returns to normal operation.

Quality Assurance

Walker Products has supplied engine management components since 1946 and operates as an ISO 9001/TS 16949 certified company. The OE Base Sensor line is built around application-specific fitment and diagnostic feedback requirements for modern vehicle systems.