MY98 wiper failure help please
 

Hi all

Iam just back from rainy hell. I was on highway heavy rain at all and then its happen. Driving with cca 110-120km/h no wind and my wipers stopped at diver side back mirror. Damaged plastic toggle joint cover on electric motor axle. This is that stupid plastic s*it what holds whole wiper moving distributor. Iam really pi**ed off who can be so stupid and make rally like car wiper system with plastic connections?!
So Iam need to know part number for this plastic nothing or for whole kit pleas.
Is it usual failure?