Walker 350-34122 Oxygen Sensor - Downstream

Walker 350-34122 Oxygen Sensor for Honda and Acura

Walker Products 350-34122 is a heated oxygen sensor built as a specific-fit OE replacement for select Honda and Acura applications. It is engineered for downstream bank 1 sensor 2 locations, helping the ECU receive the feedback it expects for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for downstream use
• Specific fitment for the listed vehicle applications
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 39.69 in.
• Overall length: 43.23 in.
• Radiused polygon connector shape

Application Details

This Walker Products Aftermarket sensor is designed for 2003-2007 Honda Accord, downstream, and 2004-2008 Acura TSX, downstream. In these applications, the Walker 350-34122 supports the ECU’s diagnostic feedback for the affected exhaust position and is built to match the specified fitment location.

What It 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
• Increased exhaust emissions from a failing sensor
• Damage-related sensor performance problems at the connector or harness

Installation Notes

Confirm the vehicle’s downstream bank 1 sensor 2 location before ordering. Inspect the sensor, wiring harness, and connector for physical damage during diagnosis, since damaged wiring can shorten service life and affect readings. Threaded mounting and the specified connector style should be matched to the original application for proper installation.

Quality Assurance

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946 and manufactures this part as an OE-style replacement for the listed applications. The brand operates under Automotive ISO9001/TS 16949 quality systems and builds each part number for its specific fitment position.