I'm looking for the part number of the rubber grommet that connects the front of the muffler pipe to the body of the car. Mine is cracking where the muffler inserts and it's causing the exhaust to droop on that side. I attached a photo so you can see the part I'm talking about; it's red. The dealer wants $54 for a new grommet, which I think is ridiculous for a small piece of rubber. I want to try to find it online elsewhere for less.

 

I have purchased from this dealer before and the prices seem to be about as good as you can find. REAR MUFFLER INSULATOR, LEFT for 2013 Jaguar XJ|C2C32948

 

As XJsss mentions, C2C32948 is the part. Just to add it is the same part used on the diesel X350 XJ and the original X250 XF, as well as all the X351s. Might be useful if you want to search online auctions for stocked parts being sold by brokers at a discount.