Walker 350-34711 Oxygen Sensor - Upstream

Walker OE Replacement Oxygen Sensor for BMW

Walker OE Replacement oxygen sensor part number 350-34711 is a specific-fit heated sensor for the upstream position on the 1995 BMW 320i. It is built around the listed harness, connector, and thread specifications to support direct replacement service on the correct application.

Key Features

• Specific-fit oxygen sensor for the upstream location
• Heated sensor design for faster operating readiness
• 4-wire configuration with female connector
• 13.11 in. wiring harness length and 20-gauge wire
• 18.00 mm thread diameter and 16.65 in. overall length
• Walker OE Replacement line for OE-style service parts

Detailed Description

This Walker 350-34711 oxygen sensor is listed for the 1995 BMW 320i, upstream, and is intended for direct replacement where the original sensor uses the same fitment and connector layout. The heated sensor design helps the sensor reach operating temperature more quickly, which is important for accurate exhaust feedback during normal engine operation. With a 4-wire, female-connector setup, 13.11-inch harness length, and 18.00 mm thread diameter, this part is specified to match the application details needed for a proper service replacement. Walker 350-34711 is an OE Replacement part number that should be verified against the vehicle’s original sensor configuration before installation.

Walker OE Replacement focuses on service parts built to match original equipment-style fitment and function. For buyers searching for a 1995 BMW 320i upstream oxygen sensor, BMW 320i oxygen sensor replacement, or Walker 350-34711, this listing provides the key dimensions and connector details needed for application matching.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn upstream sensor
• Slow sensor response during closed-loop operation
• Connector or harness mismatch on the original sensor
• Exhaust emissions issues tied to a failing sensor

Installation Notes and Tips

Confirm the vehicle is a 1995 BMW 320i with the upstream sensor location before ordering. Match the 4-wire female connector, 18.00 mm thread diameter, harness length, and overall length to the original part. Inspect the exhaust bung threads and wiring routing before installation, and verify the sensor position after replacement to ensure the correct upstream location is used.

Quality Assurance

Walker OE Replacement parts are cataloged as OE-style service components for application-specific replacement. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.