Piecing together a Garmin flasher, will this fit the Striker 4cv?

I have a Garmin striker 4cv and gt-20 transducer I’m trying to make a flasher out of. I’ve already handled battery, DIY transducer arm, and the small carry bag that comes with the portable ice fishing kit. The bag does not come with the plastic base and handle as pictured in this image. I’ve had a ice kit before. I am trying to buy this off Garmin but Garmin can’t confirm fit. This was an old item number for the echo series of last decade.

I’m pretty certain this is it. It looks exactly the same and I’m not sure if by some off chance fitment has changed. Does anybody know if this will fit?