Have a look at 3dhubs.com. You send your design to a local printer and get your part printed. It can be pretty cheap.
I modeled a part using 123D from AutoDesk which is free to download and pretty easy to use, especially if the part is simple. You might be able to get someone else to do a model for you - I would offer but I'm too busy at the moment. I previously printed a few parts for the C class I am working on.