NTK 25651 Oxygen Sensor - Downstream Left or Downstream Right

Direct Fit Oxygen Sensor

NTK 25651 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, with manufacturing controls that support consistent sensor performance.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct application matching
• 4-wire configuration for the correct electrical interface
• Threaded mounting type for secure installation
• 17.2500 wiring harness length
• 18.000 thread diameter

Detailed Description

NTK 25651 is part of the Direct Fit Oxygen Sensor line, a product line focused on application-specific replacement sensors. NTK draws on its background as an OE oxygen sensor manufacturer and uses controlled ceramic technology from raw material through finished sensor production. The result is a replacement oxygen sensor built to match the original sensor’s fit and function for select Jaguar applications. This part number 25651 is used in downstream left and downstream right positions on the Jaguar XJ12 and Jaguar XJS, with fitment listed for 1995-1996 Jaguar XJ12 and 1995 Jaguar XJS. This part cross-references Bosch 15074 for the same application.

What It Helps Address

• Faulty oxygen sensor readings
• Check engine light concerns related to sensor performance
• Incorrect air-fuel feedback to the engine control system
• Slow sensor response from a worn heated sensor
• Replacement needs for direct-fit emission control service

Installation Notes

Compatible With 1995-1996 Jaguar XJ12, downstream right and downstream left. Compatible With 1995 Jaguar XJS, downstream right and downstream left. Verify the threaded mounting style, wire count, and harness length against the original sensor before installation. Use the listed fitment notes to confirm downstream placement and OE-equivalent application details.

Quality Assurance

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