Walker 250-24617 Oxygen Sensor

Walker Products OE Oxygen Sensor for Downstream Applications

Walker Products OE 250-24617 is a heated oxygen sensor built for specific downstream applications on select Chevrolet, Pontiac, and Oldsmobile vehicles. It is engineered as an OE-style replacement that delivers the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring.

The Walker Products OE line focuses on application-specific fitment and sensor positioning, making this part number a direct match for the listed downstream locations on vehicles such as the Chevrolet Malibu, Pontiac Grand Am, and Chevrolet Corvette.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for proper harness connection
• Wiring harness length: 42.44 in.; overall length: 45.98 in.

Detailed Description

250-24617 is designed for downstream oxygen sensor locations where accurate exhaust feedback is needed for ECU operation. Walker Products builds this sensor for the exact application and mounting position, which is important on vehicles that rely on precise sensor input to manage fuel delivery and emissions performance. This part is listed for downstream front, downstream, downstream right, and downstream left positions across the covered applications.

Fitment includes 1997-2003 Chevrolet Corvette, 1997-2003 Chevrolet Malibu, 1999-2004 Pontiac Grand Am, 1997-1999 Oldsmobile Cutlass, and 1999-2004 Oldsmobile Alero. For search relevance, this oxygen sensor is a direct-fit option for drivers looking for a downstream oxygen sensor for Chevrolet Malibu, Pontiac Grand Am downstream sensor replacement, or a Chevrolet Corvette downstream left/right oxygen sensor. This part cross-references no additional part numbers in the provided data.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the exact position before ordering, since this part is listed for specific downstream locations only. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation. Verify thread size, connector shape, and wire count against the original sensor to ensure proper replacement on the Chevrolet Malibu, Pontiac Grand Am, or Chevrolet Corvette application.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as OE replacement parts for worldwide vehicle applications. The company is ISO 9001/TS 16949 certified and has supplied engine management and fuel system components since 1946.