Want the performance of a High end transducer without drilling a hole in your boat? The Garmin 1KW In-Hull Transducer w/ID and Mounting Tank is the right choice. The tank gets glassed down to the hull and the transducer is submerged into a bath of mineral oil to help reduce false echoes. The powerhouse has 14 elements and will not lose any power shooting through solid fiberglass hulls. It is compatible with GSD 24. Garmin # 010-10641-20
Product Accessories for Garmin M260 8 Pin 1KW In-Hull Transducer w/ID and Mounting Tank
Garmin 6-Pin Unit to 8-Pin Transducer Adapter
Garmin's 010-11612-00 adapter allows you to connect newer 8-pin transducers to Garmin GPS Units that require a 6-pin connector.