Garmin B75M Bronze 12° Thru-Hull Transducer - 600W, 8-Pin
Garmin B75M Bronze 12° Thru-Hull Transducer - 600W, 8-Pin — Product description
Discover Superior Underwater Clarity with the Garmin B75M Bronze Thru-Hull Transducer
Imagine gliding through coastal waters, your Garmin chartplotter lighting up with razor-sharp images of fish schools, wrecks, and bottom structure—all without the hassle of wedging in a fairing block. The Garmin B75M Bronze 12° Thru-Hull Transducer delivers exactly that, blending rugged bronze construction with advanced broadband technology for boaters who demand precision in saltwater pursuits.
Crafted by Airmar and optimized for Garmin systems, this 600W powerhouse skips the guesswork on hull matching. Its built-in 12° tilted element perfectly aligns with deadrises from 8° to 15°, sending crystal-clear depth and temperature readings straight to your marine network. Whether you're chasing trophy striped bass or mapping new reefs, this transducer turns murky depths into actionable intel.
Key Features That Set It Apart
- Bronze Flush-Mount Design: Corrosion-resistant for harsh marine environments, installs seamlessly through the hull for a low-profile, drag-free setup.
- 12° Tilted Element: Automatically compensates for your boat's hull angle—no extra hardware or custom shimming required.
- Broadband CHIRP Ready (80-130 kHz): Handles both conventional sonar and spread-spectrum scanning, revealing finer details at greater ranges than fixed-frequency units.
- Integrated Temperature Sensor: Tracks water temp changes to pinpoint thermoclines where baitfish—and predators—congregate.
- 39-Foot Cable Length: Plenty of reach for routing to your Garmin black box or display without signal loss.
Boat owners rave about how this transducer transforms average sonar into pro-level scouting gear, especially on planing hulls where deadrise matters most.
Detailed Technical Specifications
| Frequency (kHz) | Power (W) | Beam Width (° LF/HF at -3dB) | Max Depth (ft) | Sensors | Pins | Supported Deadrise (°) |
|---|---|---|---|---|---|---|
| 80-130 | 600 | 24/16 | 800 | Depth + Temp | 8 | 8-15 |
With a 2-inch shaft and straightforward thru-hull mounting, it's engineered for depths up to 800 feet, making it ideal for offshore adventures without compromising beam width or resolution.
Effortless Installation and Hull Compatibility
Skip the headaches of mismatched transducers. The 12° tilt handles hulls from 8° to 15° deadrise out of the box, common on many center consoles and sportfishers. Drill a clean hole, bed it in marine sealant, and connect the 8-pin Garmin plug—job done in under an hour for most DIYers.
Pro Tip: Position it forward of the prop wash and away from strakes for the cleanest returns. Always double-check your hull thickness; this unit thrives on fiberglass up to 1/2-inch thick.
Pair it with Garmin's GSD 26 black box sonar module for full CHIRP potential, unlocking wider cones and sharper separation on your GPSMAP or echoMAP series.
Real-World Performance: Why Boaters Choose Bronze Thru-Hull
In choppy bays or bluewater runs, the B75M's bronze body shrugs off barnacles and electrolysis better than plastic alternatives. Anglers targeting bottom dwellers love the 24° low-frequency beam for wide searches, switching to 16° high-freq for pinpoint jigging.
One captain shared: "Upgraded from a transom-mount—night-and-day difference in clarity at 200 feet. Temp sensor alone paid for itself spotting upwellings."
It's not just gear; it's confidence on the water, minimizing false reads from air bubbles or keel interference.
Maintenance for Longevity
Wipe down after saltwater exposure, inspect the face for growth yearly, and store dry during layup. Avoid high-pressure washes directly on the ceramic element to preserve sensitivity.
Frequently Asked Questions
What hull deadrise angles does the Garmin B75M 12° transducer support?
It supports deadrise angles from 8° to 15°, making it perfect for most planing hulls without needing a fairing block.
Is this transducer CHIRP compatible?
Yes, its 80-130 kHz broadband range works with CHIRP-enabled Garmin sounders like the GSD 26 for enhanced target separation.
Does the Garmin B75M include a temperature sensor?
Absolutely, it provides accurate water temperature data alongside depth readings to your Garmin network.
What's the maximum depth capability of this 600W transducer?
It reliably performs up to 800 feet, ideal for coastal and moderate offshore fishing.
How do I install the B75M Bronze thru-hull transducer?
Drill a hole matching the 2-inch shaft, apply sealant, secure the nut from inside, route the 39-foot cable, and plug into your Garmin unit—instructions included.
Why choose bronze over plastic for a thru-hull mount?
Bronze offers superior durability in saltwater, resisting corrosion and growth for longer life in marine conditions.
What beam widths does it provide?
Low frequency: 24° for broad coverage; high frequency: 16° for detailed views.
w/12° Tilt
600W
Flush-mounted bronze housing,tilted element inside the transducer accommodates all hull deadrises and eliminates the need for a fairing block.
This broadband transducer is designed to allow both traditional and Spread Spectrum scanning when used with a compatible sonar like the GSD 26. It features a bronze, thru-hull mount design with 12 degree tilt and provides both depth and temperature data to your Garmin Marine Network
Max Depth - 800'
Suppoarted Deadrise/Transom Angles - 6-15° Deadrise
Airmar B75M w / 12 Tilt 600W flush-mounted bronze housing, the tilt element inside the transducer can accommodate all hull drops and eliminates the need for fairing. This ...
SKU: NVN-47877
MPN: 010-11636-21
UPC: 753759972028
Technical specifications
| Brand | Garmin |
| Model | Garmin B75M Bronze 12° Thru-Hull Transducer - 600W, 8-Pin |
| SKU / MFR# | 47877 |
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