Crash sensors

Does anyone know of any websites that sell airbag crash sensors. I have a '97 Mystique that kept flashing airbag code 45. After checking the wiring connector and cleaning all corrosion off of the driverside crash sensor bracket, I realized that the sensor had rotted away from the bracket it was spot welded to. I don't want to pay dealer cost for a new sensor, but I've had no luck finding any online so far. Any help would be appreciated.