Walker 350-34243 Oxygen Sensor - Downstream

Walker 350-34243 Oxygen Sensor Overview

Walker Products 350-34243 is a heated downstream oxygen sensor built as a specific-fit OE replacement for select Suzuki, Chevrolet, Pontiac, and Geo applications. It is designed to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.

For vehicles such as the Suzuki Swift, Chevrolet Metro, and Chevrolet Tracker, this downstream oxygen sensor supports accurate diagnostic reporting when the original sensor has aged or failed. The Walker Products Aftermarket sensor line is engineered for application-specific fitment and connector configuration.

Key Features

• Part number: 350-34243
• Heated oxygen sensor for downstream placement
• Specific-fit design for direct application matching
• 4-wire configuration with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 22.56
• Overall length: 26.1
• Connector shape: radiused polygon

Detailed Product Description

Walker Products 350-34243 is an emission control sensor intended for downstream exhaust monitoring on select vehicles. It is built to match the required sensor position and electrical feedback expected by the engine control unit, helping maintain proper system operation after replacement. This part number is listed for downstream applications on 2007-2011 Suzuki Swift, 1998-2001 Chevrolet Metro, 1996-2001 Suzuki Swift, 1999-2000 Chevrolet Tracker, 1999-2000 Suzuki Vitara, 1996-2000 Pontiac Firefly, and 1996-1997 Geo Metro.

Walker Products Aftermarket focuses on OE-style engine management and oxygen/air-fuel sensors, with application-specific engineering for fitment and connector layout. The 350-34243 oxygen sensor is a practical replacement when the original downstream sensor is triggering fault codes, affecting emissions readings, or causing drivability concerns.

What This Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect exhaust feedback to the ECU
• Rough engine operation caused by a failing sensor signal
• Increased fuel consumption from inaccurate air-fuel correction
• Elevated exhaust emissions from degraded sensor performance

Installation Notes and Fitment

• Fits 2007-2011 Suzuki Swift, downstream
• Fits 1998-2001 Chevrolet Metro, downstream
• Fits 1996-2001 Suzuki Swift, downstream
• Fits 1999-2000 Chevrolet Tracker, downstream
• Fits 1999-2000 Suzuki Vitara, downstream
• Fits 1996-2000 Pontiac Firefly, downstream
• Fits 1996-1997 Geo Metro, downstream

Before installation, inspect the sensor wiring harness and connector for heat damage, corrosion, or abrasion. Confirm the downstream mounting location and thread size match the original part before replacement. This part number, 350-34243, is a direct-fit style sensor for the listed applications.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures sensors to application-specific requirements for OE-style replacement use. The brand operates with Automotive ISO9001/TS 16949 certification, supporting consistent production and catalog accuracy for parts like 350-34243.