[GrahamBrown1]

These covers will be for the ball joints, normally all that holds them on is a securing clip or wire ring. However volvo won’t sell them on there own hence the massive cost for new arms. You would need to disconnect the arm to gain access to the ball joint to enable replacement of the covers if you can find them anywhere….. the likes of eBay might help but it’s getting the correct size and quality materiel. Quickest and easiest is full replacement………

Volvo suspension components used to last well over 100,000 miles and 10 years and I don’t recall them to be at such prices!