Denso 234-4951 Oxygen Sensor - Downstream

Denso 234-4951 Oxygen Sensor for Jaguar OE-Style Replacement

Denso 234-4951 is an OE Style heated oxygen sensor built for direct replacement on select Jaguar applications. It is engineered for a specific fit and uses a 4-wire, female connector design with a threaded mounting style for accurate installation and reliable exhaust monitoring.

Key Features

• OE Style oxygen sensor for direct-fit replacement
• Heated sensor design for faster operating response
• Specific fit for select Jaguar downstream applications
• 4-wire configuration with female connector
• Threaded mounting type with 0.708 thread diameter
• 18.90 wiring harness length
• Built to OE standards for exact replacement fitment

Product Details

This Denso oxygen sensor is designed to match the original equipment layout on select Jaguar XF, XFR, XJ8, XJR, XK, XKR, S-Type, XK8, Super V8, and Vanden Plas applications. The Denso OE Style line focuses on first-time fit and consistent sensor performance, with an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination. That protection supports stable engine management, improved fuel efficiency, and longer service life. This part number, 234-4951, is a direct replacement choice for drivers servicing downstream oxygen sensor faults on compatible Jaguar models.

This part cross-references ACDelco 213-3093 and Bosch 15373 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect air-fuel feedback from a worn sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Rough running or drivability issues tied to sensor degradation
• Failed emissions testing caused by oxygen sensor performance problems

Installation Notes and Tips

Verify the connector style, wire count, thread diameter, and downstream position before installation. This sensor is a specific-fit replacement, so matching the vehicle year, model, and chassis or VIN note is important for proper application. For 2011 Jaguar XF and 2011 Jaguar XFR, the fitment applies to vehicles up to chassis/VIN R47153. Confirm the exhaust sensor location and route the harness to avoid heat damage during installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The OE Style design is intended to provide the correct part and fit for the listed Jaguar applications, including 2006-2011 Jaguar XF and 2006-2009 Jaguar XJ8 downstream service needs.