NTK 25719 Oxygen Sensor - Downstream Left or Downstream Right

Direct-Fit Oxygen Sensor for Porsche

NTK 25719 is a direct-fit heated oxygen sensor built for specific applications on Porsche 911 and Porsche 918 Spyder models. It uses a threaded mounting design and a 4-wire configuration to match the original sensor layout for downstream service.

Key Features

• Direct-fit design for specific Porsche applications
• Heated oxygen sensor for faster operating response
• 4-wire construction with threaded mounting
• 32.5-inch wiring harness length
• 18 mm thread diameter
• OE-equivalent fit, form, and function

Detailed Description

NTK 25719 is part of the Direct Fit Oxygen Sensor line, engineered for exact replacement use rather than universal adaptation. Fitment includes 2009-2017 Porsche 911 downstream right and downstream left applications, plus 2015 Porsche 918 Spyder downstream right and downstream left applications. This part number is also listed for multiple Porsche 911 engine-specific downstream positions, including MA1.01, MA1.02, MA1.03, and MA1.70 configurations. NTK 25719 is built to meet or exceed OE specifications and is manufactured with extensive quality testing for reliable sensor output.

What It Is Used For

• Replacing a worn or slow-responding downstream oxygen sensor
• Addressing oxygen sensor fault codes related to downstream monitoring
• Restoring proper exhaust gas feedback for emissions control
• Correcting drivability issues caused by inaccurate sensor readings
• Maintaining OE-style sensor performance on Porsche 911 and Porsche 918 Spyder applications

Installation Notes and Tips

Confirm the downstream left or downstream right position and verify engine code and connector layout before ordering. This sensor uses a threaded mounting type and a specific-fit harness, so it should be matched to the exact application listed for the vehicle. Use the part number 25719 to confirm the correct replacement before installation.

Quality Assurance

NTK is part of the NGK family of products and is a major original equipment oxygen sensor supplier. The 25719 is tested during manufacturing to help ensure quality and reliability that meet or exceed OE specifications.