Garmin

Garmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 0° Tilt, 8-Pin - Airmar B175HW

SKU: 56934 · UPC: 753759123536 · MPN: 010-12181-20
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02 · Overview

Garmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 0° Tilt, 8-Pin - Airmar B175HW — Product description

Upgrade your boating experience with the Garmin Bronze Thru-Hull Wide Beam Transducer, a powerhouse designed for anglers and navigators who demand crystal-clear underwater views without compromising on hull integrity. This flush-mounted unit, featuring a rugged bronze housing, sits nearly flush with your boat's exterior—protruding less than a quarter-inch—making it trailer-ready and bunk-friendly. Say goodbye to fairing blocks; the integrated 0° tilted element adapts seamlessly to hull deadrises from 0 to 7 degrees, ensuring optimal sonar performance across various vessel types.

Superior Sonar Performance for Real-World Boating

Crafted for fiberglass and wood hulls, this transducer delivers exceptional target separation and bottom detail in depths up to 500 feet. Its wide beam coverage—spanning a generous 25 degrees—excels at spotting fish schools, structure, and wrecks even at higher speeds, giving you an edge in competitive fishing or everyday navigation. Paired with precise temperature sensing, it provides invaluable data for locating thermoclines where baitfish congregate, helping you zero in on trophy catches.

The 1kW power handling shines in challenging conditions, cutting through water column noise for reliable readings from shallow bays to offshore drops. Boaters rave about its ability to maintain consistent performance without the drag or complexity of traditional thru-hull setups, freeing you to focus on the water ahead.

Effortless Integration and Durability

With an 8-pin connector and 30-foot cable, installation is straightforward for most DIY enthusiasts or marine pros. The 2-inch shaft threads securely, and the included instructions guide you through hull prep, sealant application, and wiring to compatible Garmin displays. Bronze construction resists corrosion in saltwater environments, standing up to years of abuse from waves, salt spray, and trailering impacts.

  • Frequency Range: 150-250 kHz for versatile high-frequency scanning
  • Power: 1,000 watts for deep, detailed penetration
  • Max Depth: 500 feet—ideal for coastal and bluewater pursuits
  • Beam Width: 25° wide beam for broad coverage
  • Sensors: Depth and water temperature
  • Cable: 30 feet of marine-grade wiring

Why Boaters Choose This Over In-Hull or Transom Mounts

Unlike transom-mounted transducers that suffer from aeration and speed limitations, this thru-hull design mounts below the waterline for uninterrupted sonar pulses. In-hull alternatives often lose signal strength through hull material; here, direct water contact ensures maximum efficiency. Perfect for center console boats, sportfishers, or cruisers where clean lines and performance matter, it eliminates the need for external fairings that add drag and snag lines.

Imagine motoring out at dawn, watching your Garmin screen light up with vivid CHIRP imagery—bait balls suspended over reefs, individual fish marked in high definition. That's the confidence this transducer brings to every trip.

Pro Tips for Peak Performance and Longevity

To get the most from your investment:

  • Select a forward-facing, flat hull section away from strakes or thru-hulls for minimal interference.
  • Use a marine-grade sealant like 4200 or 5200 for a watertight seal.
  • Pair with Garmin's latest sounders supporting 1kW CHIRP for full potential.
  • Routinely inspect the face for marine growth and clean gently to preserve the ceramic element.
  • Winterize by flushing with fresh water if stored in a trailer.

This setup not only enhances your electronics but also boosts resale value, as savvy buyers prioritize quality sonar installations.

FAQ

What hull types is this Garmin Bronze Thru-Hull Transducer best suited for?

It's optimized for fiberglass and wood hulls with deadrises between 0 and 7 degrees, providing reliable performance without additional fairings.

How deep can this transducer reliably scan?

Expect clear readings up to 500 feet, making it suitable for inshore, offshore, and deep-water fishing.

Does it measure water temperature?

Yes, it includes an integrated temperature sensor for real-time water temp data, crucial for finding temperature breaks.

Is this transducer trailer-friendly?

Absolutely—its low-profile bronze housing protrudes less than 1/4 inch, safe for trailer bunks and rollers without damage.

What makes the wide beam design advantageous?

The 25-degree beam width offers broader coverage, ideal for quickly locating fish schools and structure at trolling or cruising speeds.

What's the cable length and connector type?

It features a 30-foot cable with an 8-pin connector, compatible with many Garmin marine chartplotters and sounders.

Do I need a fairing block for installation?

No, the built-in 0° tilted element adjusts for hull deadrise, simplifying install and reducing drag.

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 101218120 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: 0 To 7 Degree Deadrise
  • Cable Length: 30 Feet

Garmin 101218120 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 0 To 7 Degree Deadrise
  • Limited 1 Year Warranty

Garmin 101218120 Warranties


Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 0° 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 0 to 7° 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 (010-12181-20). The flush-mounted bronze can increase the power by 1 kW without fairing...
SKU: NVN-56934
MPN: 010-12181-20
UPC: 753759123536
03 · The numbers

Technical specifications

BrandGarmin
ModelGarmin Bronze Thru-hull Wide Beam Transducer w/Depth & Temp - 0° Tilt, 8-Pin - Airmar B175HW
SKU / MFR#56934

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04 · Before you buy

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05 · Customer voices

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