question: I found a power pack at e-parts marine here is the thing

Power Pack with optical Sensor for:
150 1993-03
175 1993-03
Details


Quantity 1000 item(s) available
Weight 3.00 lbs
Price: $ 168.51

Is this the right power pack? http://www.partsmarine.com/xca...age=3

here is the picture of the part. any help would be great, Thanks Steve ( fred is in a tourney today )