Use this stainless steel transducer jam nut on your compatible GT17M-THF transducer.
GARMIN Stainless Steel Transducer Jam Nut | 010-13320-01
$79.99
GARMIN Galvanic Isolator Kit for GT17M-THF Transducer | 010-13348-10
$34.99
GARMIN Stainless Steel Transducer Jam Nut for GT17M-THF Transducer | 010-13348-00
$129.99
GARMIN
Model: None
2 in stock (can be backordered)