No, you have to replace the bush/arm/roller complete. It's about £150 from MB here in England but you may be able to get it cheaper from a parts importer.
Don't waste time at the breakers yard because even if you do find one chances are it'll be on the brink of failure again.
'08 Chrysler 300CRD (MB OM 642 engine)
'95 E220 estate
'89 230TE (R.I.P.)