NTK 25761 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Direct-fit oxygen sensor

NTK 25761 is a direct-fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for OE-style fit, form, and function in emission control service.

Compatible with Porsche 718 Boxster and Porsche 718 Cayman downstream applications, plus select Porsche Macan and Porsche 911 downstream positions. The NTK Direct Fit Oxygen Sensor line focuses on application-specific coverage and OE-level replacement accuracy.

Key features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement service
• Threaded mounting type for secure installation
• 4-wire configuration for the listed applications
• 19.75-inch wiring harness length
• 18 mm thread diameter

Detailed description

NTK 25761 is part of the Direct Fit Oxygen Sensor line, which is built around application-specific coverage and OE-style replacement requirements. NTK is known for oxygen sensor manufacturing and uses ceramic-based sensor technology with manufacturing controls from raw material through finished product. This sensor is extensively tested during production to meet or exceed OE specifications for fit, form, and function. It cross-references Porsche OE numbers 9A260619300 and 95B906203A for the same application.

Fits 2017-2020 Porsche 718 Boxster, downstream. Fits 2017-2020 Porsche 718 Cayman, downstream. Fits 2018 Porsche Macan, downstream left. Fits 2017 Porsche 911, downstream right. Fits 2017 Porsche 911, downstream left. Fits 2015-2017 Porsche Macan, downstream left.

Common replacement issues

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn sensor
• Slow sensor response during closed-loop operation
• Emission test failure caused by sensor degradation
• Fault codes tied to downstream sensor readings

Installation notes and quality

Use the listed fitment, position, and notes to confirm application before installation. The threaded design and specific-fit configuration support direct replacement on the listed Porsche applications. NTK states that these oxygen sensors are extensively tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications.