Walker 250-24719 Oxygen Sensor - Upstream

OE Replacement Oxygen Sensor

Walker OE Base Sensor 250-24719 is a specific-fit, heated narrow-band oxygen sensor built for direct replacement service in emission control systems. It uses a 4-wire, 4-terminal design with an oblong female connector, male spade terminals, and an M18 x 1.5 thread for application-specific installation.

Walker Products engineers its engine management and oxygen/air-fuel sensors as OE-style replacements for a wide range of vehicles. For drivers searching for an oxygen sensor for Honda Civic or Toyota Corolla applications, 250-24719 provides the sensor feedback the ECU relies on for fuel control and fault monitoring.

Key Features

• Heated narrow-band oxygen sensor for standard replacement service
• Specific-fit design for application-matched installation
• 4-wire, 4-terminal configuration
• Oblong female connector with male spade terminals
• M18 x 1.5 thread size
• Walker OE Base Sensor line for OE-style engine management replacement

Detailed Product Overview

The Walker 250-24719 oxygen sensor is engineered to replace the original sensor in vehicles that use a heated narrow-band design. It helps the ECU monitor exhaust oxygen content so the engine management system can adjust fueling and track sensor-related faults. When an oxygen sensor begins to fail, the vehicle may run poorly, use more fuel, increase emissions, or trigger the malfunction indicator light. This part number is built for the specific application and fitment position required by the vehicle.

Walker Products has supplied engine management and fuel system components since 1946, and the OE Base Sensor line focuses on direct replacement fitment for common import and domestic applications. If you are replacing a worn oxygen sensor on a Honda Civic or Toyota Corolla, 250-24719 is a practical OE-style service part for restoring proper exhaust feedback.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy from incorrect air-fuel feedback
• Rough running caused by inaccurate exhaust readings
• Higher exhaust emissions from a degraded sensor
• Fault codes stored in the ECU for sensor or related system issues

Installation Notes and Tips

Verify the connector shape, terminal count, wire count, and thread size before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals, since physical damage can shorten sensor life and affect operation. Confirm the vehicle’s original sensor location and use the correct application match for the ECU feedback strategy.

Quality Assurance

Walker Products manufactures engine management sensors under ISO 9001/TS 16949 quality systems and develops OE-style replacement parts for specific vehicle applications. The OE Base Sensor line is built to deliver the diagnostic feedback expected by the vehicle’s ECU.