Catalytic converters

[paulXK8]

My post on converting 4.0L catalytic converters for the 4.2L engine did not get any replies. Anyone know where to get cats for the 4.2L engine (2005 XK8 X100)

[mike020150]

The specialist breakers which advertise in Jaguar Enthusiast are always a good source for second hand items like catalysts. New non-standard cats are available in high flow form for improved performance but they carry a risk of Mot failures so it's often better to stick with standard items, new or second hand. Mike.

[Andy P]

Hi Paul,
There is some info on 4.2 Cats in this post,don't know if you've seen it:
viewtopic.php?f=291&t=10163
Then there are these guys who sell 4.2 Catalytic Converters for your car:
https://www.paramount-performance.com/j ... -pair.html
But thats a performance upgrade and exspensive
Here are a few other threads that might have some info:
https://www.jaguarforums.com/forum/xj-x ... ade-93043/
https://www.jaguarforums.com/forum/xj-x ... ns-167297/
https://www.jaguarforums.com/forum/xj-x ... lp-110968/
https://www.jaguarforums.com/forum/xj-x ... rs-179158/
Sorry I can't be of more help.
Take care.
Andy.

[paulXK8]

Thanks for the replies. I see Paramount cats are an upgrade which is an option. Also one of the links was to an advertisement for a pair of used cats one of which was just the cat shell - to be filled by the purchaser. I have heard that this can be done but haven't found by whom. The shells of my cats are fine - does anyone know who can replace the insides?