Garmin

Garmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 20° tilt, 8-pin - Airmar B175HW

SKU: 56936 · UPC: 753759123550 · MPN: 010-12181-22
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02 · Overview

Garmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 20° tilt, 8-pin - Airmar B175HW — Product description

Upgrade your boat's sonar capabilities with a transducer designed for serious anglers and navigators who demand crystal-clear underwater imaging without the hassle of bulky installations. This bronze thru-hull model stands out by delivering wide-beam coverage that paints a broader picture of the water column, helping you spot baitfish schools, wrecks, and bottom contours from horizon to horizon.

Why Wide-Beam Performance Matters on the Water

In the world of marine electronics, coverage is king. Traditional narrow-beam transducers might miss the action off to the sides, but this high-wide chirp design sweeps a generous 25-degree beamwidth at 150-250 kHz frequencies. That means sharper target separation across a wider swath, ideal for offshore trolling, reef hunting, or simply keeping tabs on what's below while cruising coastal waters.

Crafted from durable bronze, it thrives in saltwater environments, resisting corrosion better than plastic alternatives. The flush-mount housing barely kisses the hull—less than a quarter-inch protrusion—letting your boat trailer effortlessly without snags on rollers or bunks. No more fairing blocks or complex angles to worry about; the built-in 20-degree tilt handles hull deadrises from 16 to 24 degrees right out of the box.

Power and Precision for Deeper Insights

Packed with 1kW of raw power, this 8-pin connector pairs seamlessly with high-end fishfinders, pushing maximum depth readings up to 600 feet. You'll get reliable bottom tracking even in challenging conditions, plus integrated temperature sensing to monitor water columns for thermoclines that fish love to hug.

Fishermen swear by chirp technology like this for its ability to filter out noise and reveal fish arches that lesser units blur into clutter. Whether you're chasing billfish in the bluewater or bottom bouncing for snapper, the wide beam ensures you don't leave potential hotspots unexplored.

Technical Highlights at a Glance

Specification Details
Mount Type Thru-Hull with 20° Tilt
Housing Material Bronze
Power Output 1 kW
Frequency Range 150-250 kHz (High-Wide Chirp)
Beamwidth 25°
Max Depth 600 ft
Sensors Depth & Temperature
Cable Length 39 ft
Pins 8-Pin
Hull Compatibility Fiberglass & Wood (16-24° Deadrise)

Real-World Applications for Boaters and Anglers

Picture this: You're running a center console offshore, scanning for weed lines loaded with mahi. The wide beam catches scattered bait balls your narrow-beam buddy misses entirely. Or on a family fishing trip, use the temp sensor to find that perfect layer where stripers stack up. Its versatility shines on everything from sportfishers to wood-planked classics, where the bronze build honors traditional hulls while embracing modern chirp tech.

Installation pros love the simplicity—no fairings mean fewer holes and less gelcoat work. Just ensure a clean, fair thru-hull spot amidships for optimal performance, and you're scanning in minutes. Pair it with your existing setup for instant upgrades in resolution and coverage.

Frequently Asked Questions

What makes a thru-hull transducer better than transom-mount options?

Thru-hull designs mount directly through the hull for a cleaner signal path, reducing air bubbles and turbulence interference common with transom mounts. This leads to more consistent deep-water performance, especially at higher speeds.

Is this transducer suitable for saltwater boats?

Absolutely—the bronze housing provides excellent corrosion resistance in harsh marine environments, making it a top pick for offshore and inshore saltwater use on fiberglass or wood hulls.

How does the wide beam help with fishing?

The 25-degree wide beam covers more ground per pass, ideal for locating bait schools, structure, and fish in mid-depth ranges. Chirp tech within 150-250 kHz adds detail, separating targets that narrower beams might lump together.

Does it measure water temperature?

Yes, it includes a built-in temperature sensor, allowing you to track surface or water column temps directly through your compatible display for better fishing strategy.

What hull deadrise angles does it support?

The 20-degree internal tilt accommodates hulls with 16 to 24-degree deadrises, eliminating the need for custom fairings and simplifying setup on most planing hulls.

Can it handle trailering without damage?

Definitely—its flush profile protrudes less than 1/4 inch, so it clears trailer bunks and rollers easily, protecting both the transducer and your hull during transport.

What's the maximum depth capability?

It reliably probes to 600 feet, powered by 1kW output, perfect for offshore applications where you need to see ledges, drop-offs, and bottom fish.

Ready to transform your sonar game? This transducer blends rugged reliability with cutting-edge chirp coverage, giving you the edge every time you hit the water.

Garmin make products that are engineered on the inside for life on the outside. We bring GPS navigation and wearable technology to the automotive, aviation, marine, outdoor and fitness markets. We believe every day is an opportunity to innovate and a chance to beat yesterday. We offer products with essential utility, leading-edge technologies, compelling features, and exceptional ease-of-use to create clear differentiators our customers appreciate and desire.

Garmin 101218122 Attributes

  • Mounting Location: Thru-Hull Mount
  • Number Of Pins: 8 Pin
  • Depth: 500 Feet
  • Power Rating: 1000 Watt
  • Frequency Range: 150-250 kHz
  • Supported Angle: 16 To 24 Degree Deadrise
  • Cable Length: 39 Feet

Garmin 101218122 Features & Benefits

  • Step Up To 1 Kilo Watt Without A Fairing With This Flush-Mounted Bronze Housing That Protrudes Less Than 1/4 Inch Outside The Hull And Can Sit On The Trailer Rollers/Bunks Without Damage
  • Tilted Element Inside The Transducer Accommodates All Hull Deadrises And Eliminates The Need For A Fairing Block
  • Excellent Choice For Fiberglass And Wood Hulls
  • 8-Pin Transducer Has A Depth Of 600 Feet
  • Transducer Kit Comes With Installation Instructions
  • Transducer Supports A 16 To 24 Degree Deadrise
  • Limited 1 Year Warranty

Garmin 101218122 Warranties


Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 20° Tilt, 8-Pin - Airmar B175HW

Step up to 1 kW without a fairing with this flush-mounted bronze housing that protrudes less than 1/4-inch outside the hull and can sit on the trailer rollers/bunks without damage.

The tilted element inside the transducer accommodates all hull deadrises and eliminates the need for a fairing block. Low, medium, high, and high wide versions provide maximum flexibility for the choice of frequencies.

An excellent choice for fiberglass and wood hulls, this 8-pin transducer has a depth of 600'; an operating frequency of 150-250 kHz; a beamwidth of 25°; and a 16 to 24° deadrise.

Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.

Garmin's tilt element B175HW 8-pin bronze straight-through hull-mounted transmitter with 39' cable (010-12181-22). The flush-mounted bronze can increase the power by 1 kW without fairing...
SKU: NVN-56936
MPN: 010-12181-22
UPC: 753759123550
03 · The numbers

Technical specifications

BrandGarmin
ModelGarmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 20° tilt, 8-pin - Airmar B175HW
SKU / MFR#56936

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04 · Before you buy

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05 · Customer voices

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