Hey Phil,

I recently purchased the Camshaft position sensor on Ebay for 49 bucks. According to their chart this number fits.

Bosch OEM 0-232-103-037 Camshaft Position Sensor Mercedes Benz W203 W210 W211

Granted I have not installed it yet, so this info is limited. But I'm confident it will work.
Give it a shot! its cheap money, all things considered.
Best of luck
Joe