Walker 350-34924 Oxygen Sensor - Downstream

Walker 350-34924 Oxygen Sensor for BMW 323i

Walker Products 350-34924 is a downstream oxygen sensor engineered as an OE-style replacement for the 1997 BMW 323i. It delivers the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Key Features

• Downstream oxygen sensor application for 1997 BMW 323i
• Walker Products Aftermarket engine management sensor line
• OE replacement design for vehicle-specific fitment and ECU feedback
• Supports emissions system monitoring after the catalytic converter
• Part number 350-34924 for direct catalog identification

Product Details

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946, with manufacturing focused on application-specific replacement parts for modern electronic engine controls. The 350-34924 oxygen sensor is built for the downstream position on the BMW 323i, where it monitors exhaust conditions after the catalyst and reports data to the ECU. For buyers searching for a 1997 BMW 323i downstream oxygen sensor or Walker 350-34924 oxygen sensor replacement, this part matches the listed vehicle and position.

This part cross-references no listed interchange numbers in the provided data.

Common Issues This Sensor May Address

• Illuminated malfunction indicator light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate ECU input
• Higher exhaust emissions from a failing downstream sensor
• Stored fault codes tied to the oxygen sensor circuit or related systems

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals. Check the exhaust area for physical damage that could shorten sensor life. Confirm the downstream mounting location on the 1997 BMW 323i before installation, and clear any stored ECU fault codes after the repair is complete.

Quality Assurance

Walker Products is an Automotive ISO 9001/TS 16949 certified company, and its sensor catalog is built around application-specific engine management replacements. Part number 350-34924 is manufactured for the listed BMW 323i downstream application.