Furuno 520-IHC IN-HULL Ducer W/8 Pin Connector

The Furuno 520-IHC IN-HULL Ducer with 8 Pin Connector is a professional-grade in-hull transducer designed for anglers and boaters who demand reliable sonar performance without through-hull drilling. Built for shoot-through applications, this transducer mounts inside your hull, making it ideal for fiberglass boats, aluminum hulls, and vessels where traditional through-hull installation isn't practical or desirable. Whether you're pursuing walleye in freshwater lakes, targeting offshore species, or navigating unfamiliar waters, this Furuno unit delivers the imaging clarity serious fishermen depend on.

Operating at dual frequencies of 50 and 200 kHz, the Furuno 520-IHC provides versatile coverage across shallow and deep water scenarios—50 kHz penetrates deeper for structure and suspended fish, while 200 kHz delivers high-resolution detail for precise target identification. The transducer's 45-degree beam angle at 50 kHz and 15-degree beam angle at 200 kHz create complementary coverage patterns that maximize your sonar's effectiveness across varied bottom conditions. Rated at 600 watts of output power, this unit cuts through turbidity and noise interference common in active fishing environments. The plastic in-hull mount is engineered to integrate flush with your hull interior, and the 30-foot cable with 8-pin connector provides straightforward integration with compatible Furuno fishfinders and chartplotters.

This transducer suits boaters seeking non-invasive installation, rental boat operators, and anglers upgrading aging systems without major hull modifications. The shoot-through design works best when mounted flat against the inside of a fiberglass or composite hull, with optimal performance achieved when the mounting surface is clean and properly bedded. Before installation, verify your existing fishfinder's connector type matches the 8-pin standard and confirm your sounder operates at 50/200 kHz compatibility. Weighing just 4 pounds, the unit is portable and retrofit-friendly for owners who want to add sonar capability to vessels previously without it.