Wiper Motor Gear Assembly

[kwmouser]

I am wanting to obtain a new nylon gear for the gear assembly to my C230 mono-wiper motor other than buying a used unit that is quit possibly as bad or almost as bad as the original. MB wants $530 for a new motor. I see remanufactured units on the market so someone out there is producing new gears. If anyone out there knows where I can locate these parts you would be saving me a lot of $$$ which would be a great help. Thankyou and Godbless.
Ps: I have seen after market wiper motor assemblies, a brand called Febi. They are quit reasonably priced; however, I do not have a good feeling about the quality or fit. Has anyone out there installed one of these units? I would like to know what your opinion of the brand and the preformance of the parts. Thanks again.