Walker 350-34416 Oxygen Sensor - Downstream

Walker 350-34416 Oxygen Sensor Overview

Walker Products 350-34416 is a heated oxygen sensor built as a specific-fit OE replacement for select GM compact cars. It is engineered for downstream bank 1 sensor 2 applications and uses a 4-wire, threaded design to deliver the feedback the ECU expects.

For drivers searching for a downstream oxygen sensor for a 1995-2002 Chevrolet Cavalier or 1996-2002 Pontiac Sunfire, this Walker Products Aftermarket part number 350-34416 is built around the application details that matter: connector style, harness length, thread size, and sensor position.

Key Features

• Heated oxygen sensor for downstream placement
• Specific fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• 65.28 in. wiring harness length and 68.82 in. overall length
• 18.0 mm threaded mounting type
• Male connector with radiused polygon shape
• Walker Products Aftermarket part number 350-34416

Application and Fitment Details

This sensor is engineered for vehicles that require downstream oxygen sensor feedback to the ECU. It fits 1995-2002 Chevrolet Cavalier, downstream; 1996-2002 Pontiac Sunfire, downstream; 1996-1998 Buick Skylark, downstream; 1996-1998 Oldsmobile Achieva, downstream; and 1996-1998 Pontiac Grand Am, downstream. In many of these applications, it is used as bank 1 sensor 2.

Walker Products develops engine management and oxygen/air-fuel sensors as OE-style replacements for global vehicle applications. The 350-34416 follows that approach with vehicle-specific fitment, connector geometry, and harness length matched to the intended installation position.

What This Sensor Helps Address

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

Installation Notes and Tips

Confirm the vehicle uses a downstream, threaded oxygen sensor with the same connector shape, wire count, and thread diameter 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. Verify the exact bank and sensor position on the vehicle to match the ECU’s expected feedback path.

Quality Assurance

Walker Products has produced engine management components since 1946 and operates with ISO 9001/TS 16949 certification. The 350-34416 is manufactured for specific application fitment and diagnostic feedback requirements, supporting reliable replacement service for the listed Chevrolet Cavalier, Pontiac Sunfire, Buick Skylark, Oldsmobile Achieva, and Pontiac Grand Am applications.