Walker 350-34506 Oxygen Sensor - Downstream

Walker 350-34506 Downstream Oxygen Sensor

Walker Products 350-34506 is a heated downstream oxygen sensor built as an OE-style replacement for specific Chevrolet, Pontiac, and Saturn applications. It is designed for bank 1 sensor 2 locations where accurate exhaust feedback is needed for proper ECU monitoring.

The Walker Products Aftermarket line focuses on application-specific engine management components, and this oxygen sensor follows that approach with the correct threaded mounting, connector style, and harness length for the listed vehicles. If your check engine light is on, fuel economy has changed, or the engine is running poorly, the sensor and its wiring should be inspected closely.

Key Features

• Part number: 350-34506
• Heated oxygen sensor for downstream placement
• Specific-fit design for listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector
• 18.0 mm threaded mounting design
• Wiring harness length: 27.48
• Overall length: 31.02

Vehicle Fitment

• Fits 2006-2011 Chevrolet HHR, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2005-2010 Chevrolet Cobalt, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2010 Pontiac G5, downstream; OE replacement.
• Fits 2007-2009 Pontiac G5, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2005-2007 Saturn Ion, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2002-2007 Saturn Vue, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2005-2006 Pontiac G4, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2005-2006 Pontiac Pursuit, downstream; OE replacement.
• Fits 2004 Saturn L300, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2002-2003 Saturn L200, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2002-2003 Saturn LW200, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2002 Saturn L100, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2002 Saturn SC1, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2002 Saturn SC2, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2002 Saturn SL, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2002 Saturn SL1, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2002 Saturn SL2, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.
• Fits 2000-2001 Saturn SW2, downstream; fits downstream bank 1 sensor 2 on specific vehicle models.

What It Helps Address

• Check engine light related to downstream oxygen sensor performance
• Rough running caused by incorrect exhaust feedback to the ECU
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes

Confirm the connector shape, wire count, thread diameter, and downstream bank 1 sensor 2 location before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life and affect signal quality. For long-tail fitment searches, this part is commonly selected as a downstream oxygen sensor for 2006-2011 Chevrolet HHR, 2005-2010 Chevrolet Cobalt, and 2002-2007 Saturn Vue applications.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and builds this sensor as an OE replacement for the listed applications. The company is ISO 9001/TS 16949 certified, and the Walker Products Aftermarket line is focused on application-specific fitment and ECU feedback requirements. This part cross-references no additional part numbers provided for the same application.