Wondering if any members have a reliable source for O2 sensors for a 2005 XK8 -- and part numbers, if possible. Thanks!

 

I get mine from Rock Auto,,, the denso sensors they list... Getting them ain't so bad (cept the price). Getting them IN,,, that's where the fun begins. If you need suggestions, just ask.

 

Do not buy anything else than genuine Denso, the cheap ones can give you trouble and as JayJagJay says it is a real PITA to change them. So be prepared.........
I have changed all hydraulic lines and timing chains and tensioners on my XKR, but when my RH bank CO2 sensor had to be replaced, THEN I got frustrated.

 

I hear ya,,, that's how it was for me the first (or second) time 2 cars! That is, until I went caveman on them.

What I do (after removing EVERYTHING in the way),,, when I KNOW they are going to have to come out no matter what, it or they're are dead, not working anyways, is I snip the wires and take a wrench (14, 15mm) that just barely fits over the sensor post where the wires come out and I BREAK/shatter the whole post off the back of the sensor. It's surprisingly easy. Clean up the remnants.

From there it's just like the head of a bolt or nutt sticking out of the back of the cat... Then I hit it with a bunch of liquid wrench or some other...let it soak.

Then I take a breaker bar with a 7/8ths SHORT socket on the end, pop it over what left of the sensor, and what's left twists right out. This makes life so much easier.

Reinstall new sensor by hand until its just tight, and finish it with a proper O2 sensor tool. I'll never do it any other way.