Walker 250-54119 Oxygen Sensor - Upstream

Walker OE Oxygen Sensor for Nissan

Walker Products OE oxygen sensor Part Number 250-54119 is an upstream replacement sensor engineered for specific Nissan applications. It is built to provide the ECU with the diagnostic feedback needed for proper fuel control and emissions monitoring.

Key Features

• OE-style oxygen sensor for upstream placement
• Application-specific fitment for Bank 1 Sensor 1 locations
• Designed for Nissan Sentra and Nissan Juke models listed below
• Supports ECU feedback for air-fuel and emissions management
• Walker Products OE line for direct replacement service

Fitment Details

• Fits 2017-2019 Nissan Sentra, Upstream. Notes: Bank 1 Sensor 1 needs an upstream oxygen sensor; front oxygen sensor compatible with various vehicle models.
• Fits 2016-2017 Nissan Juke, Upstream. Notes: Bank 1 Sensor 1 needs an upstream oxygen sensor; front oxygen sensor compatible with various vehicle models.
• Fits 2015 Nissan Juke, Upstream. Notes: B1S1; Del 10/2014; From 10/2014.

Detailed Description

Walker Products OE 250-54119 is an upstream oxygen sensor made for vehicles that require precise exhaust-gas feedback to the engine control unit. In the listed Nissan Sentra and Nissan Juke applications, this sensor is used at Bank 1 Sensor 1 to help the ECU manage fuel delivery and monitor emissions performance. The Walker Products OE line focuses on direct replacement parts built for specific vehicle applications and sensor positions.

This part number 250-54119 is a direct-fit oxygen sensor for 2017-2019 Nissan Sentra and 2015-2017 Nissan Juke upstream locations. If the original sensor is aging or damaged, the vehicle may store fault codes and show drivability or emissions-related symptoms.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by incorrect air-fuel feedback
• Higher fuel consumption from inaccurate sensor readings
• Increased exhaust emissions
• Stored ECU fault codes tied to Bank 1 Sensor 1

Installation Notes and Tips

Confirm the vehicle’s sensor position before ordering: this part is for upstream, Bank 1 Sensor 1 applications only. Inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals before installation. If the original sensor failed due to wiring or connector damage, repair those issues first to avoid repeat faults.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as OE replacement parts for specific applications. The company is ISO 9001/TS 16949 certified and has supplied engine management components since 1946.