Replace the whole thing, cheaper than piecing it out, and go thru rock auto, they're 1/2 the price of the local car parts store for the same thing. I have done lots of shocks struts and springs over the years, having been a front end alignment guy for so many years. (I'm not any more) and in my experience the best shocks and struts are the Gabriel ultra. Monroe's don't last, and kybs are too soft.