I'm talking about the yellow foam parts on the top of the rear shock in the picture. Is there a specific name for the part? My shocks are good but my donuts are collapsed. I have new donuts to put in. Guessing the foam on top of the shocks also collapsed. Have searched at my normal part suppliers but can't find the foam part sold by itself.

 

I get the oem jag ones from eBay.

 

What are they called?

 

https://www.ebay.com/itm/25548392488...mis&media=COPY

https://www.ebay.com/itm/25603194879...mis&media=COPY

 

Damper Isolators.
Upper = CAC949350
Lower = CAC949465

I have found that the Jaguar dealer is more cost effective if you have a commercial account and get jobber price.
Look the cost of the parts with the ACTUAL part number.

 

 

Parts Geek Car-Part.com

 

Found up and lower isolators for $50.00 ($100 for both sides of car). Rockauto has rear KYBs for $87 each ($174 for both sides or car). Don't know this brand. Any comments? They also have Bilstein green for $109 each.

 

KYB used to have oem jag foam ones in the box, not anymore. In my experience, oem jag is the only way to go. I call all the aftermarket foams marshmallows because it just turns to mush unless there’s been a recent reformulation in all the suspension bushings.

 

Adding things to my long term shopping list as I get a lot of racket from the rear suspension and suspect if its not all original, its pretty damn old. If I were to replace the shocks, am I correct in that the typical other wear and tear parts I should be replacing at the same time are the set of isolators at the top and the spring isolator? Parts # 13, 14 and 5 respectively? Any other bits in this assembly that are "might as well change them while I'm in there"?

 

New dampers come with #13 and #14.
You just need #5.

I bought a car from Previous owner that had new dampers installed and re-used the old spring isolators!!!!!!!!!!!!!

I have to drop everything again to replace them. (grrrrrrrrrrr)

 

This is exactly the scenario I have with my '01 XJR. When it was resurrected from the garage it sat in before I bought it, the shop put new silver KYBs on it and didn't replace the upper isolators. Not only does the car ride like a "regular" XJ8, but the isolators are definitely worn (not toast yet like the '00 LS swapped XJR) but close enough that I'll likely end up doing them once the '00 XJR rear suspension has been addressed. Oh well...

 

Looked closer at shocks. The lower bushings on my back ones were degraded. Also, they are black. The front KYBs look fine but the webbing at the top of the bellows had fallen apart so guessing pretty old. Not sure if KYB are comfort or sport. Better to have the same all around so went with Bilstein green plus SKP front bellows and bump stops. Checked around for prices. As usual RockAuto cheapest.

 

Just a side note. Most of the time if a shock has split or beat an Isolator / bushing to death, and there seems nothing wrong with the shock, it quite possibly has to do with degradation inside the shock absorber itself. Ocassionally it is just a bad Isolator/ bushing. But it's most likely a bad shock itself. Hope it helps.

Jack

 

Aftermarket and OEM parts are available from SNG Barrett. I used factory OEM parts for the rear, and the back order time was quite short, Here;s an example.... CAC949465 Rear Shock Absorber Lower Bush/Isolator (sngbarratt.com)