Garmin - Transom mount transducer bracket for transducer - for echoMAP 50dv, 70dv; Fishfinder echo 151DV, echo 201dv, echo 551dv - Walmart.com
LCYG power controller for Garmin ECHO 300, 301c, 500, 550, 201, 201dv repairs - AliExpress
Amazon.com: yourour 010-12006-11 Heavy Duty Transducer Mount Bracket, Transom Mount Bracket with Spray Sheild Compatible with Garmin Echo, echoMAP, CV,GT,GCV,GPSMAP,GSD 4-pin 8-pin or 12-pin Transducer. : Electronics