Walker 350-31200 Oxygen Sensor - Upstream

Overview of Walker 350-31200 Oxygen Sensor

The Walker 350-31200 oxygen sensor is a universal, non-heated sensor designed for emission control in various vehicles including Chevrolet, Mercedes-Benz, and Nissan models. This sensor features a threaded mounting type and precise wire specifications to ensure reliable performance in emission systems.

• Universal fit for multiple vehicle makes and models
• Non-heated oxygen sensor type
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length of 5.83 inches and overall length of 9.37 inches
• Single 20-gauge wire for signal transmission

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line offers a range of emission control components designed to meet or exceed OEM specifications. The 350-31200 oxygen sensor is part of this line, providing dependable sensor technology suitable for emission systems in various Chevrolet, Mercedes-Benz, and Nissan vehicles. This product line focuses on compatibility and quality to support emission compliance and engine efficiency.

Product Specifications and Features

This oxygen sensor features a non-heated sensor type, which is suitable for applications where heated sensors are not required. The sensor includes a single 20-gauge wire with a wiring harness length of 5.83 inches, allowing for straightforward installation and connection. The threaded mounting type with an 18.0 mm thread diameter ensures secure attachment to the exhaust system. The overall length of 9.37 inches provides adequate reach for proper placement in the exhaust stream.

Compatible Vehicles and Applications

• Chevrolet Pickup and S10 Blazer models
• Mercedes-Benz 380SE, 380SEL, 380SL, 380SLC, 500SEC, 500SEL
• Nissan 720 and Sentra models

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor engine performance
• Emission control system malfunctions triggering check engine lights
• Fuel efficiency problems due to faulty oxygen sensor signals
• Failed emissions tests related to sensor inaccuracies
• Engine hesitation or rough idling caused by sensor failure

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Use appropriate tools to remove the old sensor and install the Walker 350-31200 oxygen sensor by threading it securely into place. Verify the wiring harness length of 5.83 inches is sufficient for your vehicle’s connection point. Avoid over-tightening the sensor to prevent damage to the threads. Confirm proper sensor orientation and connection to the vehicle’s emission control system.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet industry standards for emission control components. The 350-31200 part number undergoes quality checks to ensure durability and accurate sensor readings. While specific warranty details are not provided here, Walker typically offers coverage consistent with aftermarket emission sensor products.