Walker 350-34162 Oxygen Sensor - Upstream

Walker Oxygen Sensor for BMW 735i

Walker Products Part Number 350-34162 is a heated oxygen sensor built for specific fitment and OE-style signal feedback. It is listed for the 1986-1987 BMW 735i in the upstream position, making it a direct-match option for drivers addressing fuel trim or emissions-related sensor faults.

Walker Products Aftermarket Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as replacement parts for specific vehicle applications. For this BMW 735i oxygen sensor, the design centers on correct mounting, connector style, and ECU feedback so the vehicle’s diagnostic system can read the sensor as intended.

• Heated oxygen sensor for upstream placement
• Specific-fit application for 1986-1987 BMW 735i
• 4-wire design with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector
• Wiring harness length: 59.37 in.
• Overall length: 62.91 in.

Detailed Product Description

Walker 350-34162 is an emission control sensor intended for the upstream oxygen sensor location on the 1986-1987 BMW 735i. As a heated sensor, it helps the ECU monitor exhaust oxygen content more quickly after startup, supporting accurate air-fuel control and diagnostic feedback. The specific-fit construction is important for BMW 735i oxygen sensor replacement jobs where connector shape, harness length, and threaded mounting must match the original layout. This part number, 350-34162, is also a practical reference when searching for a Walker upstream oxygen sensor for 1986-1987 BMW 735i applications.

This part cross-references no additional part numbers provided in the source data.

Common Symptoms It May Address

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

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the threaded mounting location and upstream position on the 1986-1987 BMW 735i before installation. Because oxygen sensor faults can also be caused by wiring or connector issues, verify the full circuit if the original sensor shows signs of failure. Part number 350-34162 should be matched to the vehicle’s application and connector layout before installation.

Quality Assurance

Walker Products states that its engine management and oxygen sensor lines are developed as OE replacement parts and manufactured under Automotive ISO 9001 / TS 16949 quality systems. The brand has supplied engine management and fuel system components since 1946, and this part follows that application-specific approach for BMW 735i service.