NTK 25722 Oxygen Sensor - Downstream Left

Direct-Fit Oxygen Sensor

NTK 25722 is a direct-fit heated oxygen sensor built for specific applications and threaded mounting. It is engineered for accurate exhaust feedback and OE-style fitment, with a 4-wire design and a 37.5-inch harness for the listed applications.

Key Features

• Heated oxygen sensor for faster operating response.
• Specific-fit design for the listed application.
• Threaded mounting with an 18 mm thread diameter.
• 4-wire configuration with a 37.5-inch wiring harness.
• NTK direct-fit design for OE-style replacement.

Detailed Description

NTK 25722 is part of the Direct Fit Oxygen Sensor line, a product family focused on application-specific replacement and streamlined coverage. NTK draws on its OE sensor manufacturing background and ceramic technology to produce oxygen sensors with controlled fit, form, and function. This part is built for the Porsche Panamera and matches the listed downstream left application, including the B2S2 placement noted in the fitment data. This part cross-references Bosch 16177 and DENSO Auto Parts 234-4475 for the same application.

What It Is Used For

• Replacing a failed heated oxygen sensor.
• Restoring exhaust feedback for engine management.
• Addressing sensor fault codes related to mixture control.
• Correcting drivability issues tied to inaccurate oxygen readings.
• Servicing the downstream left sensor location on the Porsche Panamera.

Installation Notes and Tips

Verify the threaded mounting style, wire count, and harness length before installation. Confirm the downstream left position and B2S2 placement against the vehicle’s original sensor configuration. Use the part number 25722 to match the correct application before ordering or installation.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand is part of the NGK family and is recognized as a major original equipment oxygen sensor supplier.