I have a small leak coming form a solenoid(?) on the front passenger side of the transmission. What is this part and how do I get a replacement?

Description: There are two wired cylinders about the size of a thumb that protrude from the side of the transmission in the front. These two cylinders fit onto a single mounting plate.

I think this part is a shift or gear sensor of some sort. This part was bumped during an oil change and now has a slight leak.

'98 EX Civic coupe automatic