When your hull's deadrise angle at the transducer mounting location exceeds 5 degrees, this Garmin replacement fairing block corrects the angle and keeps your GT56 thru-hull transducer running parallel to the waterline -- preserving proper orientation and sonar accuracy.

Specifications:

• Replacement fairing block for GT56 series thru-hull scanning transducers
• Orients transducer parallel to the waterline for accurate sonar returns
• Required when deadrise angle at the mounting location exceeds 5 degrees