Walker 350-34271 Oxygen Sensor - Downstream Front or Downstream Rear

Walker 350-34271 Oxygen Sensor for Honda and Acura

Walker Products 350-34271 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Honda and Acura applications. It is engineered to provide the ECU with the correct diagnostic feedback for downstream sensor locations, helping maintain proper engine management on covered vehicles.

Compatible With 2010-2017 Honda Odyssey, 2014-2015 Honda Pilot, 2014 Honda Ridgeline, 2010-2013 Acura MDX, 2010-2013 Acura ZDX, 2011-2012 Acura RL, and 2012-2014 Acura TL in the listed downstream positions.

Key Features

• Part number: 350-34271
• Heated oxygen sensor for downstream applications
• Specific fit for the listed vehicle positions
• 4-wire design with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 25.12 in.
• Overall length: 28.66 in.
• Walker Products Aftermarket engine management sensor line

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE replacement parts for a wide range of vehicles. This sensor is built for the exact application and mounting position required by the ECU, which is important on vehicles that monitor downstream oxygen sensor performance for emissions and fuel-control diagnostics. The 350-34271 is a direct-fit option for Honda Odyssey, Honda Pilot, Honda Ridgeline, and select Acura models where the correct downstream sensor location is specified.

This part cross-references no listed alternate part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation tied to sensor signal issues
• Elevated exhaust emissions from a failing downstream sensor
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes

Install the sensor in the exact downstream position listed for the vehicle. Verify the connector shape, wire count, and threaded mounting before installation. Inspect the sensor wiring harness and connector for physical damage, since damaged wiring can shorten sensor life and trigger diagnostic faults. Confirm the application by year, make, model, and position before replacement.

Quality Assurance

Walker Products is an Automotive ISO9001/TS 16949 certified company with a long history in engine management components. The 350-34271 is manufactured for specific vehicle applications and is intended to provide the diagnostic feedback required by the ECU on covered Honda and Acura models.