|IF you are talking about the heat sink on the CPU, then yes, it should be a concern. You can probably fine the plastic piece on ebay, or if not, at least fine the whole CPU cooler component on eBay.|
If you can't find an exact replacement, you can always use one of the generic heat sinks for your particular CPU type (if you need help figuring out what you need, just post back). And replace the whole cooler with the new one. This may prevent the aground form fitting, but you should still be OK.
Free Computer Tips and more:http://RyanTAdams.com
Paid Tech Support: Black Diamond