NTK 25720 Oxygen Sensor - Downstream Left or Downstream Right

Overview

NTK 25720 is a direct fit heated oxygen sensor built for specific Jaguar applications. It uses a threaded mounting design, a 4-wire layout, and a 19.75-inch harness length to match OE-style service requirements.

Compatible with Jaguar XF, XJ8, XJR, XK, XKR, S-Type, XK8, Super V8, and Vanden Plas applications listed below, this NTK oxygen sensor supports accurate exhaust feedback for downstream monitoring. The NTK 25720 is engineered for specific-fit replacement where original equipment form and function matter.

Key Features

• Heated oxygen sensor design for faster operating response.
• Specific-fit replacement for listed Jaguar applications.
• Threaded mounting type for OE-style installation.
• 4-wire configuration with 19.75-inch wiring harness length.
• 18 mm thread diameter for matched fitment.
• NTK Direct Fit Oxygen Sensor line focused on application coverage and OE-style service parts.

Detailed Description

NTK 25720 is part of the Direct Fit Oxygen Sensor line, a product family built to streamline application coverage while maintaining OE-style fit, form, and function. NTK draws on its background as a major oxygen sensor manufacturer and uses controlled ceramic technology in sensor production, with manufacturing testing performed to meet or exceed OE specifications. For Jaguar XF, XJ8, XJR, XK, XKR, S-Type, XK8, Super V8, and Vanden Plas vehicles in the listed years, this sensor provides a direct replacement path for downstream oxygen sensor service. The part number 25720 is also referenced by Bosch 15373 and DENSO Auto Parts 234-4951 for the same application.

What It Helps Address

• Faulty downstream oxygen sensor readings.
• Check engine light concerns related to oxygen sensor performance.
• Incorrect exhaust feedback to the engine management system.
• Service replacement needs for threaded, specific-fit sensor locations.
• Fitment issues caused by mismatched harness length or connector layout.

Installation Notes

Verify the listed year, model, and downstream position before installation. Match the threaded mounting style, 4-wire configuration, and harness length to the original sensor specification. Use the vehicle application notes to confirm left or right downstream placement for the exact Jaguar fitment.

Quality Assurance

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