Walker 350-34121 Oxygen Sensor - Downstream Front

Overview of Walker 350-34121 Oxygen Sensor for Nissan Altima

The Walker 350-34121 oxygen sensor is designed specifically for Nissan Altima models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor with 4 wires for accurate readings
• Specific fit for Nissan Altima vehicles
• Threaded mounting with 18.0 mm thread diameter
• 11.73 inches wiring harness length and 15.28 inches overall length
• 20 gauge wire measurement for durability and signal integrity
• Radiused polygon male connector for reliable connection

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 350-34121) is engineered with a heated sensor element to ensure faster response times and improved fuel efficiency. The sensor includes four wires, which support both the heating element and signal transmission, enhancing its performance in emission control systems. The wiring harness length of 11.73 inches and overall length of 15.28 inches provide sufficient reach for proper installation in the Nissan Altima. The 20 gauge wire measurement ensures durability and consistent electrical conductivity. The sensor’s threaded mounting type with an 18.0 mm thread diameter allows for secure and precise placement in the exhaust system. Additionally, the radiused polygon male connector shape is designed to fit the specific connector type used in Nissan Altima models, ensuring compatibility and ease of installation.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line offers a range of emission control components designed to meet or exceed OEM specifications. This product line focuses on providing reliable and vehicle-specific parts, such as the 350-34121 oxygen sensor, to maintain proper engine function and emissions compliance. Walker’s aftermarket sensors are engineered for durability and precise fitment, making them suitable replacements for Nissan Altima oxygen sensors.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces harmful emissions by accurately monitoring exhaust gases
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Supports proper operation of catalytic converters

Installation Notes and Tips

When installing the Walker 350-34121 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector shape and wire count match the Nissan Altima’s harness before installation. Properly torque the sensor to manufacturer specifications to avoid exhaust leaks. It is recommended to inspect the wiring harness for damage and replace if necessary to ensure accurate sensor readings.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards for emission control components. While specific warranty details for part number 350-34121 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability in Nissan Altima applications.