Furuno 520T-BLD Bronze Thru-Hull Low Profile 600W - 10-Pin

Discover Superior Underwater Detection with the Bronze Thru-Hull Transducer

Imagine gliding through open waters with crystal-clear views of the seafloor and fish below, all while monitoring water temperature changes in real-time. This low-profile bronze thru-hull transducer delivers exactly that, blending rugged durability with precise sonar performance tailored for avid boaters and professional anglers. Crafted for seamless integration into fiberglass or wood hulls, it minimizes drag for smoother rides and enhanced fuel efficiency, making it a go-to choice for vessels up to 25 feet.

Unlike bulkier alternatives, its streamlined design hugs the hull closely, reducing turbulence and ensuring reliable readings even at higher speeds. Whether you're tracking structure in shallow bays or probing depths up to 1,200 feet, this unit's dual-frequency operation—wide coverage at lower frequencies for broad scans and narrow beams for detailed targeting—empowers you to find your next catch with confidence.

Key Performance Highlights

Engineered for excellence, this transducer packs 600 watts of power into a compact, bronze housing that's built to withstand harsh marine environments. The temperature sensor provides instant feedback on water conditions, helping you adjust trolling speeds or bait choices on the fly.

• Dual-Frequency Versatility: 50 kHz offers a wide 45° beam for expansive searches down to 1,200 feet, while 200 kHz provides a focused 12°-15° beam ideal for depths up to 700 feet and pinpoint accuracy.
• Low-Profile Advantage: Reduces hydrodynamic drag, perfect for planing hulls with deadrise angles up to 12° (optimal through 7°).
• Extended Reach: 30-foot cable with a secure 10-pin connector simplifies routing to your display unit.
• Robust Build: Bronze construction paired with a urethane acoustic window ensures longevity and clear signal transmission.

Boat owners rave about its ability to cut through thermoclines and reveal hidden fish holds, turning ordinary outings into trophy hunts.

Effortless Installation for Lasting Results

Setting up this thru-hull sensor is straightforward, even for weekend warriors. Drill a precise 2-inch hole, secure with the included hull nut and rubber washer for irregular surfaces, and route the right-angle cable exit to shield it from foot traffic. The low-profile design means less protrusion below the waterline, minimizing vulnerability to debris or impacts.

Pro Tips:

• Position it forward of the propeller and away from strakes for optimal beam spread.
• Ensure the hull is clean and fair before mounting to avoid air pockets that distort readings.
• For fiberglass hulls, fairing blocks can fine-tune deadrise alignment, boosting performance by up to 20%.

Once installed, calibrate with your sonar system for immediate, high-definition bottom contours and fish arches that rivals more expensive setups.

Why Boaters Trust This Transducer for Everyday Adventures

In the competitive world of marine sonar, reliability trumps flash every time. This model's Airmar-inspired B117 housing style excels in real-world scenarios—from coastal fishing to offshore exploration—delivering consistent data without the fuss of frequent recalibrations. Its bronze material resists corrosion in saltwater, while the temperature probe aids in locating bait balls influenced by thermal layers.

Compared to plastic housings, bronze offers superior sound velocity and durability, especially in cooler waters where materials can brittle. Anglers appreciate the wide-to-narrow beam switch for adapting to varied depths, and cruisers value the drag reduction that preserves hull speed. Backed by a reputation for quality, it integrates flawlessly with compatible chartplotters and sounders, elevating your boating experience without complexity.

Maintenance Made Simple for Peak Performance

Keep it performing like new with basic care: Rinse with fresh water after saltwater exposure, inspect the face for marine growth, and avoid high-pressure washes that could damage the urethane window. Annual checks on cable integrity and hull nut torque ensure years of trouble-free service. Divers note that its low profile rarely collects heavy fouling, saving time and effort between trips.