I replaced the same part for Accent CRDi, just recently. Total bill came up to 19000
. I had the same symptoms as you had mentioned, except it was in right side.
I was out of warrenty and hence couldnt go in that direction. I asked the service manager about the warrenty claims. He said "Company doesnt cover this, even if its in the warrenty period".
Once replaced, he (manager) showed me the part that was replaced. The rubber was cut and grease was coming out of it.
This was conversation between me and SM..
ME: "what is this part used for?"
SM: "this is the component which helps your car take turns."
ME: "what happens if i dont replace it?"
SM: "you still can drive the car as of now. but after some time, since the turning mechanism is getting disturbed, like getting water and dust thru the cut, you may be unable to turn the car and might breakdown in the middle of the road"
After this he took me to a Petrol version accent (which is lifted up) and showed me from underneath.
SM: "For Petrol version, you can just replace the stuff that is cut (the rubber thingy). hence its much cheaper. But for Diesel, you need to replace the entire part, hence the higher cost".
Since you are still in warrenty period, doing something like not going in for genuine Hyundai part might forfiet your warrenty. just do some more research on the warrenty void part before you do something.
my $0.02...