NTK 22538 Oxygen Sensor - Downstream

Direct-Fit Oxygen Sensor

NTK 22538 is a specific-fit heated oxygen sensor built for downstream applications. It uses a threaded mounting design, a 4-wire layout, and a 29.25-inch harness for a direct-fit replacement on select Ford applications.

Key Features

• Heated oxygen sensor for faster operating response.
• Specific-fit design for direct replacement use.
• Threaded mounting with 18 mm thread diameter.
• 4-wire configuration with 29.25-inch wiring harness.
• OE-style fit, form, and function from NTK.

Detailed Description

NTK 22538 is part of the Direct Fit Oxygen Sensor line, which focuses on application-specific coverage and OE-style replacement design. As a downstream oxygen sensor, it is used in the exhaust stream after the catalyst to monitor exhaust oxygen content and support engine management strategy. This part fits 2014-2019 Ford Fiesta, downstream; 2013-2016 Ford Escape, downstream; and 2014-2016 Ford Transit Connect, downstream. This part cross-references DENSO Auto Parts (e.g., 234-4577, 234-4962) for the same application.

What It Is Used For

• Replacing a failed downstream oxygen sensor.
• Addressing check engine light concerns related to sensor performance.
• Restoring exhaust feedback for fuel control and emissions monitoring.
• Correcting drivability issues caused by inaccurate oxygen readings.

Installation Notes and Tips

Verify the connector, thread size, and harness length before installation. Use the exact application listing for the vehicle and position, since this is a specific-fit sensor and not a universal part. Confirm the downstream location matches the original sensor placement on the vehicle.

Quality Assurance

NTK is a major original equipment oxygen sensor supplier and tests these sensors during manufacturing to meet or exceed OE specifications. The Direct Fit Oxygen Sensor line is built to streamline application coverage while maintaining OE-level fit and function.