I need to replace the upstream O2 sensor on my 2004 X type 2.5 (next to firewall side)
I have found a Bosch 15627 at Autozone, would this be a direct
replacement? Where could I find one of the removal tools?
PS. Thanks for the pictures dwclapp, they helped a lot

 

RonnieJoe: Yes, Bosch 15627 is the correct upstream O2 sensor for your X-Type. When you buy it at Autozone, ask them to lend you 7/8 inch sensor socket like the one pictured in this thread: https://www.jaguarforums.com/forum/x...0/#post1059714

It's basically a spark plug socket with a notch to accommodate the sensor wires. Expect Autozone to put a small charge on your credit card, which they'll fully refund when you return the socket.

To get a good view of the Bank 1, firewall upstream O2 sensor, open the hood, stand by the front left tire (US driver's side) and look down between the engine and firewall, below the brake master cylinder. From this view, it will look as if you can remove the sensor with a socket wrench or breaker bar.

However, I tried and found there was not enough free space to turn the socket handle with sufficient leverage to break the sensor free. If you get stuck at this point, drive the front tires on to ramps, or jack up the front and support it with jack stands. Lie on your back and slide under the front bumper far enough to see the O2 sensor from below the engine. Optional step: Disconnect the grey plug for this sensor from the firewall bracket, and trace the loose wire to the correct sensor.


With your left arm, reach thru the suspension members next to, and behind the left front tire, and put the socket on the O2 sensor with the handle of the breaker bar pointing towards the left tire. Pull down on the breaker bar to loosen the sensor.

Another optional step: When you install the new sensor, put a dab of anti-seize paste on the threads (not the sensor itself, just the threads) to make it easier to loosen next time.

Good luck.