Walker 350-35166 Oxygen Sensor - Upstream

OE Replacement Oxygen Sensor

Walker Products 350-35166 is an upstream oxygen sensor engineered as an OE-style replacement for select Acura and Honda applications. It is built to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on the listed vehicles.

Compatible With 2018-2021 Honda Accord, upstream and 2019-2021 Acura RDX, upstream, this sensor supports accurate exhaust-gas feedback for the engine management system. The Walker Products Aftermarket line focuses on application-specific fitment and sensor performance for modern vehicles.

Key Features

• Upstream oxygen sensor for emission control and engine management
• Application-specific fitment for the listed Acura and Honda models
• OE replacement design for ECU feedback requirements
• Walker Products Aftermarket part number 350-35166
• Built for select 2018-2025 Acura and Honda vehicles

Detailed Description

Walker Products 350-35166 is designed for vehicles that rely on an upstream oxygen sensor to monitor exhaust conditions before the catalytic converter. On the listed Acura RDX and Honda Accord applications, the sensor helps the ECU adjust air-fuel strategy and monitor emissions-related performance. If the original sensor is aging or damaged, the vehicle may store fault codes and show drivability or emissions concerns.

This part cross-references no additional part numbers in the provided data. For fitment-specific searches, use Walker Products 350-35166 for Acura RDX upstream oxygen sensor and Honda Accord upstream oxygen sensor applications.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Higher exhaust emissions from a failing sensor
• Stored ECU fault codes tied to sensor circuit or response issues

Installation Notes and Tips

Verify the connector, wiring harness, and mounting location before installation. Inspect the exhaust area for physical damage, corrosion, or contamination that could shorten sensor life. Confirm the vehicle application by year, make, model, and position before ordering.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors for decades and manufactures application-specific replacement parts for modern vehicle systems. The company is ISO 9001 and TS 16949 certified, supporting consistent production and fitment control.