Hello,

I have recently purchased a 2003 XJR with a number of issues; the most pressing being needing a knock sensor. I have changed some over the years on my VDPs and I'm checking to see if the XJR sensor are the same? When looking online I have seen some that look quite a bit different. So the question is; are they the same sensors? I have attached pictures of the two I have seen...is it knock 1 or knock 2? Thanks a bunch!


Knock 2

Knock 1

 

Knock 2. The first photo. Do yourself a huge favor and change them both unless you enjoy pulling the supercharger off on a regular basis.

The bottom photo (knock 1) is for an earlier AJ26 engine.

 

Knock 1 is for AJ26 engines and Knock 2 for AJ27.

 

I have knock sensors for a '05 4.2 in mine, ...they've been in since '18 with no issues. You need to search around, because you can find deals usually, but you have to hunt. I found mine at NAPA for a ridiculous $67 ea.

 

Yep, I noticed that Parts Geek had those for about $42

 

Thanks Guys! Got 'em on order now!

 

I am on partsgeek site now and they are selling one for 127.58.

where did you see 42 dollars?

I need to get mine also ?

 

https://www.partsgeek.com/9lzl8pz-jaguar-xj8-knock-sensor.html?gb=pp&cid=28884375&aid=4168799307&kid= 1100003047982
Right Knock Sensor - 2004-2005 Jaguar XJ8 - Santech/ Omega Envir. Tech. W0133-1655954

Review Fitment Notes
Part Number: W0133-1655954
Brand: Santech/ Omega Envir. Tech.
Notes: 'A' (Right) Bank
Position: Right
Condition: New
Shipping Options: Ground, Overnight, 2 Day