Walker 350-34097 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker Oxygen Sensor for Mitsubishi Applications

Walker Products 350-34097 is a heated oxygen sensor engineered as an OE-style replacement for specific Mitsubishi vehicles. It is built for the correct application and mounting position, helping the ECU receive the feedback it needs for accurate fuel control and emissions monitoring.

Compatible With select Mitsubishi Outlander, Eclipse, Montero, and Montero Sport applications, this sensor is a direct-fit solution for upstream locations on the left or right side, depending on the vehicle. The Walker Products Aftermarket line focuses on application-specific engine management sensors for repair work that requires proper fitment and signal response.

Key Features

• Heated oxygen sensor for emissions and fuel-control feedback
• Specific-fit design for the listed Mitsubishi applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 28.27 in.; overall length: 31.81 in.
• Walker Products part number 350-34097

Detailed Description

Walker Products 350-34097 is designed for upstream oxygen sensor replacement on select Mitsubishi models, including the 2006-2012 Mitsubishi Eclipse, 2007-2011 Mitsubishi Outlander, 2001-2006 Mitsubishi Montero, 2001-2004 Mitsubishi Montero Sport, 2005-2011 Mitsubishi Montero Sport, and 1998-2000 Mitsubishi Montero and Montero Sport California applications. It is also listed for 2012-2013 Mitsubishi Outlander upstream right service. This sensor is intended to restore the ECU feedback needed for proper air-fuel management and emissions system operation.

Walker Products has developed its engine management and oxygen/air-fuel sensor line as OE replacement parts for worldwide vehicle coverage. The brand’s application-specific approach helps ensure the sensor matches the required position and connector style for the listed Mitsubishi Outlander, Eclipse, Montero, and Montero Sport fitments.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from a failing upstream sensor
• Higher exhaust emissions during inspection or normal driving
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Install only in the listed upstream position for the specific Mitsubishi application. Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect signal quality. Confirm connector shape, thread diameter, and harness length against the original part before installation.

Fits 2006-2012 Mitsubishi Eclipse, upstream; 2007-2011 Mitsubishi Outlander, upstream right; 2001-2006 Mitsubishi Montero, upstream left; 2001-2004 Mitsubishi Montero Sport, upstream left; 2005-2011 Mitsubishi Montero Sport, upstream left; and 1998-2000 Mitsubishi Montero and Montero Sport California upstream left applications.

Quality Assurance

Walker Products is an Automotive ISO9001/TS 16949 certified company with a long history in engine management and fuel system components. Part number 350-34097 is manufactured for specific vehicle applications and fitment positions to support the diagnostic feedback expected by the ECU.