Denso 234-4720 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-4720

Denso 234-4720 is an OE Style heated oxygen sensor built for direct replacement in select Jaguar applications. It is engineered for a specific fit, with a 4-wire design, threaded mounting, and a male connector for straightforward integration with the original exhaust sensor location.

For drivers searching for an upstream oxygen sensor for 1997-1999 Jaguar XK8 or 1998 Jaguar XJ8, XJR, and Vanden Plas, this Denso sensor is built to match the original configuration and restore accurate exhaust feedback. The 15.75-inch wiring harness length and 0.708-inch thread diameter support proper routing and installation in the intended position.

Key Features

• OE Style replacement oxygen sensor for specific Jaguar fitment
• Heated sensor design for faster operating response
• Specific fit application for direct replacement use
• 4-wire configuration with male connector
• Threaded mounting type with 0.708-inch thread diameter
• 15.75-inch wiring harness length for factory-style routing

OE Style Construction

Denso’s OE Style line is built to the same standards used for original equipment replacement, with precision construction for accurate fit and dependable signal performance. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management, fuel efficiency, and longer service life. This makes Denso 234-4720 a practical choice when replacing a worn upstream oxygen sensor on Jaguar XK8, XJ8, XJR, or Vanden Plas models.

This part cross-references Jaguar LJA1682AE for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture feedback from a failing upstream sensor
• Reduced fuel economy caused by slow or inaccurate sensor response
• Rough idle or drivability issues tied to exhaust feedback errors
• Emission test failures caused by sensor degradation

Installation Notes and Tips

Install this sensor in the upstream position only where listed in the fitment data. Confirm connector style, wire length, and thread size before installation to ensure the replacement matches the original sensor layout. Because this is a specific-fit, threaded oxygen sensor, proper routing and secure seating in the exhaust bung are important for accurate operation.

• Fits 1997-1999 Jaguar XK8, Upstream
• Fits 1998 Jaguar Vanden Plas, Upstream
• Fits 1998 Jaguar XJ8, Upstream
• Fits 1998 Jaguar XJR, Upstream

Quality Assurance

Denso manufactures and tests these oxygen sensors to OE standards for replacement accuracy and consistent performance. The OE Style design focuses on first-time fit and factory-style operation, making Denso 234-4720 a reliable replacement for the listed Jaguar applications.