Walker 250-241334 Oxygen Sensor

Walker OE Base Oxygen Sensor

Walker 250-241334 is a specific-fit, heated narrow-band oxygen sensor built for downstream monitoring on select Ford applications. It is engineered as an OE-style replacement to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

The Walker OE Base Sensor line focuses on application-specific fitment and sensor position, making it a practical choice for Ford Mustang, Ford F-150, and Ford Bronco service work where the original downstream sensor has failed or is reporting a fault.

Key Features

• Part number: 250-241334
• Heated narrow-band oxygen sensor
• Specific fit for the listed Ford applications
• 4-wire design with 4 terminals
• Male connector with female terminals
• Oblong connector shape
• M18 x 1.5 thread size
• 22 mm wrench size
• Flange mounting type
• Standard replacement grade

Detailed Description

Walker Products designs this OE Base Sensor as a direct replacement oxygen sensor for downstream locations on select Ford vehicles. The sensor is intended to provide the ECU with the correct feedback for emissions and engine management monitoring, which is important when replacing a failed downstream rear or downstream side sensor. The 250-241334 is a heated, narrow-band unit with a 4-wire configuration, built for specific fitment rather than universal use.

Compatible With 2025 Ford Mustang, downstream rear; 2024 Ford Mustang, downstream; 2024 Ford F-150, downstream right; 2021-2023 Ford Bronco, downstream left; and 2021-2023 Ford F-150, downstream right. This part number, 250-241334, is also a fitment-specific option for Ford Mustang and Ford F-150 oxygen sensor replacement where the original sensor location and connector style must match.

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946 and manufactures application-specific replacement parts for modern diagnostic systems. This part cross-references no listed alternate part numbers for the same application.

What It Helps Address

• Check engine light related to a downstream oxygen sensor fault
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate sensor readings
• Elevated exhaust emissions from a failing oxygen sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Before installation, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals. Confirm the vehicle’s sensor position, thread size, connector shape, and wire count match the original part before replacement. For Ford Mustang, Ford F-150, and Ford Bronco applications, verify the downstream location shown in the fitment list to ensure correct placement.

Quality Assurance

Walker Products manufactures this sensor as an OE-style replacement under ISO 9001/TS 16949 quality systems. The OE Base Sensor line is built for application-specific fitment and diagnostic compatibility with the vehicle’s ECU.