NTK 25696 Oxygen Sensor - Downstream Left or Downstream Right

Direct-Fit Oxygen Sensor for Porsche 911

NTK 25696 is a specific-fit heated oxygen sensor built for downstream applications on the Porsche 911. It uses a threaded mounting design and a 4-wire configuration to match OE-style service requirements.

Key Features

• Direct Fit Oxygen Sensor line for application-specific replacement
• Heated sensor design for faster operating response
• Specific-fit construction with threaded mounting
• 4-wire layout with 27.5-inch harness length
• 18 mm thread diameter for matched installation dimensions

Detailed Description

NTK 25696 is part of NTK’s Direct Fit Oxygen Sensor line, developed for import and domestic coverage with OE-style fit, form, and function. NTK draws on its ceramics expertise and manufacturing control to produce oxygen sensors that are extensively tested for quality and reliability. For Porsche 911 downstream service, this sensor supports the original equipment style used on 2017, 2016, 2015, 2014, 2011, 2009, 2008, 2007, and 2006 applications, including downstream left and downstream right positions where listed. This part cross-references Bosch 16369 and DENSO Auto Parts 234-4879 for the same application.

Common Issues It Can Address

• Check engine light caused by a failing downstream oxygen sensor
• Incorrect exhaust feedback from a worn heated sensor
• Emissions test failure related to sensor response or signal quality
• Rough fuel control from degraded oxygen sensor output
• Replacement needs for OE-style downstream sensor service on the Porsche 911

Installation Notes and Tips

Verify the exact downstream position, engine code, and connector match before installation. The threaded mounting style and harness length should be checked against the original sensor to confirm proper routing and fitment on the Porsche 911. Use the vehicle’s service information for torque and removal procedures.

Quality Assurance

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