Walker 250-24066 Oxygen Sensor - Upstream

OE Oxygen Sensor for Volkswagen Upstream Applications

Walker Products OE oxygen sensor Part Number 250-24066 is a specific-fit heated sensor engineered for upstream placement and ECU feedback on select Volkswagen applications. It is built for vehicles that need accurate exhaust monitoring to help maintain proper fuel control and emissions performance.

Compatible With 1992-1998 Volkswagen Corrado, Golf, Jetta, Cabrio, and Passat upstream oxygen sensor applications, including select California emissions and Bank 1 Sensor 1 positions.

Key Features

• Heated oxygen sensor design for faster operating temperature
• Specific-fit application for direct vehicle matching
• Upstream mounting position
• 4-wire configuration with 20-gauge wiring
• Male connector with radiused polygon shape
• Threaded mount with 18.0 mm thread diameter
• Wiring harness length: 22.17
• Overall length: 25.71

Walker Products OE Line

Walker Products OE focuses on original-equipment-style engine management and oxygen/air-fuel sensors for vehicle-specific fitment and diagnostic feedback. Part Number 250-24066 follows that OE replacement approach for upstream Volkswagen oxygen sensor service, including applications where the ECU expects precise sensor input for emissions and drivability control.

Detailed Description

This Walker oxygen sensor is designed for upstream installation on select Volkswagen models from 1992 through 1998, including the Jetta, Golf, Cabrio, Passat, and Corrado. It is a heated, threaded sensor with a 4-wire layout and a male connector, making it a direct-match service part for vehicles that rely on accurate exhaust oxygen readings to manage air-fuel strategy and monitor emissions system performance. Part Number 250-24066 is a practical replacement when the original sensor has aged, triggered a fault code, or no longer provides stable ECU feedback.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Higher exhaust emissions from a failing sensor
• Stored ECU fault codes tied to sensor or related wiring issues

Installation Notes and Tips

Verify the vehicle’s year, model, engine configuration, and emissions setup before ordering. This sensor is listed for upstream positions only, so confirm the original sensor location and connector style match the application. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged wiring can shorten sensor life and affect ECU readings.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. This part cross-references Bosch (e.g., 15733) for the same application.