Garmin B744VL Long Stem Bronze Thru-Hull Depth/Temp/Speed w/FB - 8 Pin

Upgrade your marine electronics setup with a transducer that delivers reliable depth, speed, and temperature readings even in demanding saltwater environments. This bronze thru-hull model stands out for boaters who need precision without compromise, thanks to its dual-frequency capabilities and robust construction designed for long-term performance on vessels with varying hull shapes.

Exceptional Depth and Coverage for Every Adventure

Whether you're chasing deep-water species or navigating shallow coastal waters, the dual-frequency operation shines. At 200 kHz, it offers crisp, high-resolution images ideal for spotting structure and fish in depths up to around 700 feet. Switch to 50 kHz for penetrating deeper waters—think 1,500 feet or more—perfect for offshore trolling or surveying wrecks. This versatility means fewer blind spots, helping you make smarter decisions on the water.

Accurate Speed and Temperature Insights

The integrated paddlewheel speed sensor provides real-time boat speed through water, essential for precise autopilot adjustments, fuel efficiency tracking, and log calculations. Paired with a fast-response temperature probe, you'll get surface water temps that inform bait selection and fishing patterns. Anglers love how this combo reveals thermoclines, while cruisers appreciate the data for optimal routing.

Built for Saltwater Durability

Bronze housing laughs off corrosion from constant saltwater exposure, outlasting plastic alternatives in harsh marine conditions. The long stem design fits hulls with deadrise angles from flat to 28 degrees steep, ensuring a secure, flush mount that minimizes drag and turbulence. No more worrying about fittings loosening over seasons of heavy use.

Seamless Integration with Your Garmin Setup

Engineered with an 8-pin connector, it plugs right into compatible Garmin chartplotters and fishfinders, feeding clean data to your displays. Expect plug-and-play simplicity that enhances features like Quickdraw Contours or Auto Guidance without needing extra adapters. Boaters upgrading from older single-frequency units report noticeably sharper sonar returns and more dependable speed logs.

Smart Installation Tips for Peak Performance

• Position forward of the prop and keel for undisturbed water flow—aim for 1/4 to 1/3 boat length from the bow.
• Use the included fairing block to align with your hull's deadrise, reducing air entrainment and boosting signal quality.
• Drill a precise 2-inch hole, seal with marine sealant, and bed the transducer fully for a watertight fit.
• Test in neutral gear at various speeds post-install to calibrate speed and verify depth accuracy.

Pro tip: In high-speed applications, a slight forward angle (10-15 degrees) on the thru-hull fitting combats aeration, keeping readings steady above 30 knots.

Maintenance That Keeps It Running Strong

Clean the face regularly with a soft brush and mild soap to remove marine growth—avoid abrasives that could scratch the ceramic element. Inspect the paddlewheel seasonally for debris or wear, and lubricate with marine grease if needed. Winterize by flushing freshwater through the system. With proper care, this unit delivers years of trouble-free service, saving you from frequent replacements.

Real-World Wins from Boaters Like You

Fishermen rave about its ability to separate bottom structure from bait schools during live-lining for stripers. Sailors value the temp data for plotting ocean currents, while powerboaters trust the speed-through-water for true performance metrics, unaffected by current or wind. It's the go-to for trailered boats too, thanks to its sturdy build that handles repeated launchings.