Walker 250-23004 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-23004

The Walker Products OE Oxygen Sensor 250-23004 is designed for precise emission control in select Chevrolet, Geo, Honda, Isuzu, Pontiac, and Suzuki vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for models including Chevrolet Caprice, Impala, and Monte Carlo
• 12.91-inch wiring harness length with 20-gauge wire
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon female connector with 3 wires
• Overall length of 16.46 inches for proper installation

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality emission control components. This oxygen sensor is engineered to meet or exceed factory specifications, providing reliable performance and durability. The OE line ensures compatibility and fitment accuracy for specific vehicle applications, such as the Chevrolet Impala and Suzuki Sidekick, supporting emission standards and engine efficiency.

Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor response and reducing emissions during cold starts. The 12.91-inch wiring harness with 20-gauge wire and a radiused polygon female connector ensures secure electrical connections. The sensor’s threaded mounting type with an 18.0 mm thread diameter facilitates straightforward installation in the exhaust system. With three wires, this sensor provides accurate oxygen level readings to the engine control unit for precise fuel management.

Compatible Vehicles and Applications

• Chevrolet models: Caprice, El Camino, Impala, Monte Carlo, Parisienne
• Geo models: Tracker, Storm, Storm Stylus
• Honda models: Passport, Pickup
• Isuzu models: Rodeo, Amigo
• Pontiac models: Impulse
• Suzuki models: Sidekick, Stylus

Common Issues Addressed by This Oxygen Sensor

• Engine running rich or lean due to inaccurate oxygen readings
• Check engine light triggered by faulty sensor signals
• Poor fuel economy caused by improper air-fuel mixture
• Failed emissions tests related to sensor malfunction
• Rough idling or hesitation during acceleration

Installation Notes and Tips

Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use a proper oxygen sensor socket for removal and installation to prevent damage to the sensor or wiring. Verify the connector type matches the vehicle harness—this sensor uses a radiused polygon female connector with three wires. Thread the sensor carefully into the exhaust port with the specified 18.0 mm thread diameter to avoid cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. This part number 250-23004 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.