NTK 25601 Oxygen Sensor

Direct Fit Oxygen Sensor for Porsche Boxster

The NTK 25601 is a direct fit heated oxygen sensor built for specific applications on the Porsche Boxster. It uses a threaded mounting design and a 4-wire configuration to match OE-style service requirements for emissions system repair.

Key Features

• Direct fit oxygen sensor for specific vehicle applications
• Heated sensor design for faster operating response
• 4-wire construction for OE-style signal and heater control
• Threaded mounting type with 18 mm thread diameter
• 10.25 in. wiring harness length
• NTK 25601 part number for catalog and service reference

Detailed Description

NTK 25601 is part of the Direct Fit Oxygen Sensor line, engineered for import and domestic coverage with application-specific fitment. For Porsche Boxster models, this sensor supports downstream and upstream positions across 1997-2002 applications, including OE-equivalent designs noted in the fitment data. The NTK 25601 is built to deliver the fit, form, and function expected in emissions control service while maintaining the correct threaded installation style and harness length for the listed applications.

NTK is known as a sensor-focused brand within the NGK family, and its oxygen sensors are manufactured with ceramic expertise and tested during production for quality and reliability. If you are replacing a worn or failed oxygen sensor on a Porsche Boxster, this part number provides a direct-fit service option for the specified positions and model years.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a failing sensor
• Slow sensor response during closed-loop operation
• Emissions test failures caused by sensor degradation
• Driveability issues tied to inaccurate exhaust feedback

Installation Notes and Tips

Verify the exact position and notes in the fitment table before ordering. This sensor uses a threaded mount and is specific to the listed Porsche Boxster applications, so confirm connector routing, harness length, and sensor location against the original part. The part number 25601 should be matched to the vehicle’s required upstream or downstream position as shown in the fitment data.

Quality Assurance

NTK states that its oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications. The brand also emphasizes OE application technology and original equipment oxygen sensor manufacturing expertise.