Walker 350-34460 Oxygen Sensor - Upstream

Walker Oxygen Sensor for Chevrolet Astra

Walker Products 350-34460 is an upstream oxygen sensor engineered as an OE-style replacement for specific Chevrolet Astra applications. It is built to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Key Features

• Upstream oxygen sensor for Bank 1 Sensor 1 applications
• OE-style fitment for 2000-2003 Chevrolet Astra
• Supports ECU feedback for air-fuel management
• Designed for direct replacement in the specified position
• Walker Products Aftermarket line for engine management sensors

Detailed Description

Walker Products 350-34460 is part of the Walker Products Aftermarket engine management and oxygen sensor line, developed for original-equipment replacement needs across a wide range of vehicles. For 2000-2003 Chevrolet Astra models, this upstream sensor is specified for Bank 1 Sensor 1 service, making it the correct choice when replacing the front oxygen sensor on the listed application. The part number 350-34460 is engineered to provide the ECU with the feedback needed for accurate fuel-trim control and emissions monitoring.

Walker Products has supplied engine management and fuel system components since 1946, and its sensor catalog is built around application-specific fitment and diagnostic performance. If your Chevrolet Astra has a stored fault code, poor fuel economy, rough running, or an illuminated malfunction indicator light, the oxygen sensor and related wiring should be inspected as part of the repair process. Part number 350-34460 is intended for the exact upstream position shown in the fitment data.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Reduced fuel economy from a failing front oxygen sensor
• Elevated exhaust emissions on 2000-2003 Chevrolet Astra models
• Rough engine operation caused by inaccurate sensor readings

Installation Notes and Tips

Fits 2000-2003 Chevrolet Astra, upstream. Confirm Bank 1 Sensor 1 location before ordering and compare the connector, harness routing, and sensor body to the original part. Inspect the wiring harness and connector for heat damage, corrosion, or abrasion before installation, since physical damage can shorten sensor life and affect ECU feedback. The part number 350-34460 should be matched to the exact upstream position listed for the vehicle.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components and operates as an Automotive ISO 9001/TS 16949 certified company. The Walker Products Aftermarket line is built around application-specific fitment and diagnostic system requirements for modern engine management systems.