This 5-wire wide-band oxygen sensor fits select 2018-2025 Ford and Lincoln applications in the upstream position and measures the exhaust air-fuel ratio across a broad range so the engine computer can meter fuel precisely. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 250-25138 Oxygen Sensor Features:

• Fits 2018-2023 Ford Mustang; 2020-2023 Ford Explorer, Lincoln Corsair; 2020-2025 Ford F-250, F-350 Super Duty; 2021-2024 Ford Bronco Sport
• Fits 2021-2025 Ford E-350, E-450 Super Duty; 2021-2022 Ford F-450, F-550 Super Duty; 2022 Ford Escape; 2022-2024 Ford Maverick
• Sensor location by application: B1S1 (bank and sensor number)
• 5-wire wide-band oxygen sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 300 mm (11.8 in.) overall length
• Female oblong connector at the harness end with 5 terminal terminals
• Platinum electrode layer with a protective coating against combustion residue