Update
its been a really long time since i fixed this so i don't have the part number anymore. I had to call the dealer and ask them for the part number. then I found it for cheap on ebay or amazon (cant remember which).
The job was simple but a real pain in the A$$ because there was almost no room to put in the ratchet and the special socket at the same time, i had to get those pivoting small extensions to make it work. I had to use a sissy bar to untighten the sensor, it was practically rusted in. Be advice and bring a small sissy bar about 8 inches long (not longer because it will not fit) and make sure it fits over the ratchet handle.
Has been working for 5K miles and still no sight of the engin light

good luck