Walker 350-34356 Oxygen Sensor - Downstream Front or Downstream Right

Walker 350-34356 Oxygen Sensor for Mitsubishi

Walker Products 350-34356 is a heated oxygen sensor built as a specific-fit OE replacement for select Mitsubishi applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring, including downstream sensor positions on Mitsubishi Eclipse and Montero Sport models.

Key Features

• Heated oxygen sensor for emissions and fuel-trim feedback
• Specific-fit design for the listed Mitsubishi applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire configuration with male radiused polygon connector
• Wiring harness length: 20.59 in.; overall length: 24.13 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-style replacements for a wide range of vehicles. Part number 350-34356 is built for the specified fitment positions and is intended to restore accurate exhaust-gas feedback to the engine control unit. This matters on vehicles such as the Mitsubishi Eclipse and Mitsubishi Montero Sport, where a downstream oxygen sensor helps the ECU monitor catalyst efficiency and maintain correct air-fuel strategy.

This part cross-references Bosch (e.g., 15733) for the same application.

What It Helps Address

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

Installation Notes and Fitment

• Fits 2011 Mitsubishi Eclipse, downstream front.
• Fits 2005-2008 Mitsubishi Montero Sport, downstream right.
• Fits 2001-2004 Mitsubishi Montero Sport, downstream right.
• Fits 1997-2000 Mitsubishi Montero Sport, downstream right.
• Fits 1995 Mitsubishi Montero, downstream right.

Before installation, inspect the sensor wiring harness and connector for heat damage, corrosion, or abrasion. Confirm the threaded mounting location and connector style match the original part before replacement. For Mitsubishi Eclipse and Montero Sport applications, verify the downstream position shown in the vehicle service information.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34356 is produced for the listed application and fitment position to support the diagnostic feedback expected by the ECU.