Delphi SS10089 Engine Crankshaft Position Sensor

I purchased this crankshaft sensor for the engine re-build of my car. This particular sensor is in a difficult place under the engine. After rebuild, the car was throwing a code for crankshaft position sensor. I replaced the easier to reach sensor, but it was definately this sensor, although brand new. It cost me an absorbinate amount of money to have my mechanic replace this (new) sensor with another from Autozone, that was the trick. I expected more from Amazon and their vendors, dissappointed is an understatement.