GARMIN XDUCER HD TM W-SHLD 4-8-12PIN 010-12006-11

Easily attach your compatible 4-, 8- or 12-pin transducer to the transom for excellent sonar returns at all speeds. Since the transducer is in the water at all times, the mount does not protect the transducer from underwater obstructions and some drag will occur. The included transducer spray shield reduces excessive water spray at high speeds.
Can also mount to the step of your boat so the transducer is parallel with the water surface to eliminate drag. However, the transducer is out of the water with this mounting style, so it will not track the bottom when on plane. See Garmin website for compatible devices.