Walker 350-64003 Oxygen Sensor - Upstream Left or Upstream Right

Walker Oxygen Sensor for Jaguar Upstream Fitment

Walker Products 350-64003 is a heated oxygen sensor built for specific upstream applications on select Jaguar vehicles. It is engineered as an OE-style replacement to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Key Features

• Heated oxygen sensor for upstream installation
• Specific fitment for select Jaguar applications
• 4-wire design with female radiused polygon connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 10.35 in.; overall length: 13.9 in.
• Walker Products Aftermarket engine management sensor line

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as direct replacement parts for vehicle-specific applications. Part number 350-64003 is built for upstream right and upstream left positions on supported Jaguar models, including Jaguar XF, XFR, XJ8, XJR, XK, XKR, S-Type, Super V8, and Vanden Plas applications listed below. This part number is also referenced in searches for Walker 350-64003 and Walker Products 350-64003 when replacing a failed upstream oxygen sensor on a Jaguar XF or Jaguar XJ8.

Compatible With: Fits 2012 Jaguar XF, upstream right; Fits 2011 Jaguar XF, upstream right and upstream left; Fits 2011 Jaguar XFR, upstream right and upstream left; Fits 2009-2010 Jaguar XF, upstream right and upstream left; Fits 2010 Jaguar XFR, upstream right and upstream left; Fits 2006-2009 Jaguar Super V8, upstream right and upstream left; Fits 2007-2009 Jaguar Vanden Plas, upstream right and upstream left; Fits 2006-2009 Jaguar XJ8, upstream right and upstream left; Fits 2006-2009 Jaguar XJR, upstream right and upstream left; Fits 2007-2009 Jaguar XK, upstream right and upstream left; Fits 2007-2009 Jaguar XKR, upstream right and upstream left; Fits 2007-2008 Jaguar S-Type, upstream right and upstream left; Fits 2006 Jaguar S-Type, upstream right and upstream left; Fits 2005 Jaguar XJ8, upstream right and upstream left; Fits 2005 Jaguar XJR, upstream right and upstream left.

What It Can Help Address

• Check engine light related to upstream oxygen sensor faults
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from poor mixture control
• Fault codes stored in the ECU for sensor or related system issues

Installation Notes and Tips

Verify the exact vehicle, model year, and sensor position before ordering, especially on 2011 Jaguar XF and XFR applications that vary by chassis/VIN breakpoints. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Confirm the threaded mounting location and connector style match the original part, and clear any stored diagnostic trouble codes after repair.

Quality Assurance

Walker Products has supplied engine management components since 1946 and manufactures this sensor as a vehicle-specific replacement part. The brand operates under Automotive ISO9001/TS 16949 quality systems and develops sensors to provide the ECU with the required diagnostic feedback for the listed applications.