Walker 350-34436 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker 350-34436 Oxygen Sensor for Downstream Fitment

Walker Products 350-34436 is a heated oxygen sensor built as a specific-fit OE-style replacement for downstream applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring on supported Chevrolet, Pontiac, and Oldsmobile vehicles.

Key Features

• Heated oxygen sensor for downstream placement
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 40.87 in.; overall length: 44.41 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as replacement parts for original equipment applications. Part number 350-34436 is built for downstream sensor positions and is listed for 2002-2005 Pontiac Grand Am, 2002-2004 Oldsmobile Alero, 2004-2005 Chevrolet Classic, and 2004 Chevrolet Corvette in the specified downstream locations. This part number is also referenced as Walker 350-34436 for catalog and search use.

For shoppers searching for a downstream oxygen sensor for 2004 Chevrolet Corvette Bank 1 Sensor 2 or Bank 2 Sensor 2, this sensor matches the listed fitment positions. It is also listed for 2002-2005 Pontiac Grand Am downstream and 2002-2004 Oldsmobile Alero downstream applications. Walker Products 350-34436 is designed to provide the diagnostic feedback expected by the ECU on the supported vehicles.

Vehicle Fitment

• Fits 2004-2005 Chevrolet Classic, downstream.
• Fits 2002-2005 Pontiac Grand Am, downstream.
• Fits 2004 Chevrolet Corvette, downstream right.
• Fits 2004 Chevrolet Corvette, downstream left.
• Fits 2002-2004 Oldsmobile Alero, downstream.

Common Issues This Sensor May Address

• Check engine light related to downstream oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Higher exhaust emissions from a failing sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the exact position before installation, since this part is listed for downstream, downstream left, and downstream right locations depending on the vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement. Verify thread size and connector shape against the original sensor to ensure proper fitment on the supported Chevrolet Corvette, Pontiac Grand Am, Chevrolet Classic, and Oldsmobile Alero applications.

Quality Assurance

Walker Products states that its engine management sensors are manufactured for specific applications and fitment positions, with production supported by ISO 9001/TS 16949 quality systems. The brand has supplied engine management and fuel system components since 1946, and part number 350-34436 follows that OE-replacement approach for the listed vehicles.