Are the upstream and downstream oxygen sensors on a 2004
Jaguar X type 2.5 the same sensors?

 

Different

Jaguar X Type O2 Sensors Bank 2, Sensor 1

Jaguar X Type Changing O2 Sensor Bank 2 Sensor 2

Prices vary, Denso are usually reliable

 

RonnieJoe: santer is correct - the upstream & downstream O2 sensors are different and not interchangeable. In addition to Denso, Bosch is a good brand.


This thread has pictures that may help you locate and access the O2 sensors: https://www.jaguarforums.com/forum/x...4/#post1084230