You can but…
That should be one of the original Dual Beam transducers (200/455kHz), the DP-W. It does use a somewhat different pin configuration. Most importantly though is that the connections for the 200kHz are right for using with your 998c Si unit. However, the 200kHz sonar beam will be a narrower 16 degree beam, so your 200kHz 2D sonar may appear slightly stronger than what you are used to. Also, the element for this transducer was never designed for the second 2D frequency (83kHz) so I don’t know how well that will work for you.