I have a box of suspension items, steering items, mounts, bushings that I've collected over the years with the intent of rebuilding where the sun don't shine. I came across this part and can't identify it. Anybody know?

 

Cant place that on a Jaguar.

 

Hi Yachtman,
Jaguar or other, it looks like either a bump stop or an engine / gearbox mount.
Cheers,
Nigel

 

looks like a transmission mount. Normally there are two.

if not a transmission mount, it also looks like a Rear Resonator Hanger.