Walker 350-34195 Oxygen Sensor - Downstream, Downstream Front or Downstream Rear

Walker 350-34195 Oxygen Sensor Overview

Walker Products 350-34195 is a heated oxygen sensor built as a specific-fit OE replacement for select Acura and Honda applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions system operation.

For drivers searching for a downstream oxygen sensor for Honda Accord, Acura MDX, or Honda Pilot applications, this Walker Products Aftermarket sensor is matched to the listed position and connector style for direct replacement use.

Key Features

• Heated oxygen sensor for downstream and downstream rear applications
• Specific-fit design for listed Acura and Honda vehicles
• 4-wire configuration with a male radiused polygon connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 19.21 in.; overall length: 22.76 in.
• Built to provide ECU feedback for emissions and fuel management systems

Walker Products Aftermarket Line

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements. The line is built around application-specific fitment, correct sensor position, and the signal output needed by the vehicle’s control system.

Detailed Description

Part number 350-34195 is intended for vehicles that require a heated downstream oxygen sensor, including many Honda Accord, Honda Pilot, Honda Ridgeline, Acura MDX, Acura RDX, Acura TLX, and Acura TL applications. The sensor’s specific-fit design helps ensure the correct mounting position and connector interface for the listed vehicles, including downstream rear and downstream front locations where specified.

Walker Products states that its engine management sensors are developed to replace original equipment parts across many global vehicle platforms. This sensor is designed to support the ECU’s diagnostic monitoring by reporting exhaust oxygen content after the catalytic converter, which is important for emissions control and fuel system feedback. If the sensor, wiring harness, or connector is damaged, drivability and emissions performance can be affected.

What This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation tied to emissions sensor faults
• Elevated exhaust emissions from a failing downstream sensor
• Stored ECU fault codes for the affected sensor circuit

Installation Notes and Fitment Tips

Fits 2022-2025 Acura RDX, downstream; 2022-2025 Acura TLX, downstream; 2025 Honda Passport, downstream right; 2025 Honda Ridgeline, downstream right; 2019-2024 Honda Passport, downstream rear; 2020-2024 Honda Ridgeline, downstream rear; 2022 Honda Accord, downstream; 2021-2022 Honda Pilot, downstream rear; and additional listed Acura and Honda applications from 2007-2020.

Confirm the sensor position before installation, since several vehicles use different upstream and downstream locations. Inspect the connector, harness, and exhaust-side threads for damage before replacement, and verify the vehicle’s emissions configuration where notes specify federal or California emissions.

Quality Assurance

Walker Products is an automotive ISO 9001/TS 16949 certified company with a long history in engine management and fuel system components. Part number 350-34195 is built for the listed application and position to support proper ECU feedback and emissions-system operation.