For units with 8-pin transducer connector.
Product Accessories for Garmin B117 8 Pin Low Profile Bronze Thru-hull Transducer with Temp
PropSpeed's FoulFree Transducer Coating Kit is the biggest advancement in transducer paint and coatings in the last 30 years. It will keep your thru-hull or transom mount transducer free of marine growth. This nontoxic formula has zero leaching of harmful chemicals into water unlike traditional anti-fouling bottom paints and is certified by Airmar.
Garmin's 010-11612-00 adapter allows you to connect newer 8-pin transducers to Garmin GPS Units that require a 6-pin connector.