Walker 250-25160 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right

Overview of Walker OE Base Sensor 250-25160

The Walker OE Base Sensor 250-25160 is a heated wide-band oxygen sensor designed for specific vehicle applications. Engineered to meet the emission control requirements of Cadillac, INFINITI, and Nissan models, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated wide-band oxygen sensor for precise emissions monitoring
• Specific fit for select Cadillac, INFINITI, and Nissan vehicles
• Spade terminal type with 6 male terminals and 5 wires
• Rectangle-shaped female connector for secure connection
• Thread size M18 - 1.5 with 22mm wrench size for installation

Detailed Features and Specifications

This Walker oxygen sensor features a heated element to quickly reach operating temperature, improving sensor response time and reducing emissions during cold starts. The wide-band sensor type provides a broader measurement range of oxygen levels in the exhaust, allowing for more precise fuel mixture adjustments. The sensor includes a spade terminal type with six male terminals and five wires, ensuring compatibility with the vehicle’s wiring harness. The connector is female with a rectangular shape, designed for a secure and reliable electrical connection. Installation requires a 22mm wrench and the sensor threads into the exhaust system with an M18 - 1.5 thread size.

Walker OE Base Sensor Product Line

The OE Base Sensor line by Walker focuses on delivering direct-fit oxygen sensors that meet original equipment specifications. This product line is engineered to provide reliable emissions control and accurate sensor readings, supporting proper engine management systems. The 250-25160 sensor is part of this line, ensuring it matches the exact fit and function required by the specified Cadillac, INFINITI, and Nissan models.

Compatible Vehicles and Applications

• Cadillac CTS, SRX, STS
• INFINITI FX45, M45, Q45, QX56
• Nissan Altima, Armada, Frontier, Maxima, Murano, Pathfinder, Pathfinder Armada, Quest, Sentra, TITAN, Xterra

Common Issues Addressed by Walker Oxygen Sensor 250-25160

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor accuracy

Installation Notes and Tips

When installing the Walker OE Base Sensor 250-25160, ensure the vehicle is cool to avoid burns. Use a 22mm wrench to remove the old sensor and install the new one with the M18 - 1.5 thread size. Confirm the connector’s rectangular female shape matches the vehicle harness and that the six male terminals align properly. Avoid damaging the sensor wiring during installation to maintain proper function.

Quality Assurance and Warranty

Walker OE Base Sensors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details are not provided here, Walker products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.