Walker 350-34346 Oxygen Sensor - Downstream, Upstream or Upstream Rear

Walker 350-34346 Oxygen Sensor for Mitsubishi

Walker Products 350-34346 is a heated oxygen sensor built as a specific-fit OE replacement for select Mitsubishi and Dodge applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring on downstream and upstream rear positions.

Walker Products Aftermarket focuses on application-specific engine management sensors, and this oxygen sensor follows that approach with the correct connector style, wire length, and threaded mounting for listed vehicles.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for listed Mitsubishi Eclipse, Galant, Grandis, Montero Sport, and Diamante applications
• Threaded mounting with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for proper vehicle-side connection
• Wiring harness length: 36.34 in.; overall length: 39.88 in.
• Walker Products part number 350-34346

Detailed Description

Walker Products 350-34346 is an emission control oxygen sensor intended for precise replacement on vehicles that rely on accurate exhaust-gas feedback to the ECU. It is listed for downstream, downstream left, upstream, and upstream rear positions across select Mitsubishi Eclipse, Mitsubishi Galant, Mitsubishi Grandis, Mitsubishi Montero Sport, Mitsubishi Diamante, and 1994 Dodge Stealth applications. This part number 350-34346 is built for the specified fitment position so the sensor signal matches the vehicle’s diagnostic requirements.

Walker Products Aftermarket is positioned as an OE-style replacement line for engine management and oxygen/air-fuel sensors. For shoppers searching for a downstream oxygen sensor for Mitsubishi Eclipse, a Mitsubishi Galant bank 1 sensor 2 replacement, or an upstream oxygen sensor for Mitsubishi Montero Sport California emissions applications, this sensor provides the listed configuration and connector details needed for a direct replacement.

What It Can Help Address

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

Installation Notes

Verify the sensor position before ordering, since fitment varies by upstream, downstream, downstream left, and upstream rear locations. Check the sensor, wiring harness, and connector for physical damage before installation, and confirm the 18.0 mm threaded mounting and connector shape match the original part. For best results, compare the vehicle’s existing connector and harness length to the specifications listed for Walker 350-34346.

• Fits 2006-2012 Mitsubishi Eclipse, downstream
• Fits 2007-2011 Mitsubishi Galant, downstream
• Fits 2007-2009 Mitsubishi Grandis, downstream left
• Fits 2004-2006 Mitsubishi Galant, downstream
• Fits 1995-1999 Mitsubishi Eclipse, upstream
• Fits 1997-1999 Mitsubishi Montero Sport, upstream
• Fits 1995-1996 Mitsubishi Diamante, upstream rear
• Fits 1994 Dodge Stealth, upstream rear
• Fits 1994 Mitsubishi Diamante, upstream rear

Quality Assurance

Walker Products has supplied engine management and oxygen sensor components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34346 part number is manufactured for the specified application and fitment position to support the vehicle’s diagnostic system feedback requirements.