Furuno B175M Bronze Thru-Hull 20° Tilt - Med Frequency

Unlock Crystal-Clear Underwater Views with the Furuno B175M

Imagine gliding through coastal waters or venturing into deeper offshore territories, where spotting schools of fish or mapping the seabed can make or break your day on the water. The Furuno B175M Bronze Thru-Hull transducer with 20-degree tilt steps in as your reliable partner, delivering medium-frequency CHIRP sonar that punches through water columns up to 1500 feet. Crafted for boaters who demand precision without complexity, this unit transforms your fishfinder display into a window of underwater clarity, revealing fish arches, bait balls, and bottom contours with stunning detail.

Bronze construction ensures durability against the harsh marine environment, resisting corrosion while providing a secure, flush mount on hulls with 16-24 degree deadrise. Whether you're chasing trophy snapper or scouting wrecks, its 85-135 kHz range excels in mid-depth scenarios, offering beam widths from 16 to 11 degrees for targeted scanning that minimizes clutter and maximizes targets.

Superior Performance Tailored for Serious Anglers

At the heart of the B175M is its 1000-watt power rating paired with CHIRP technology, which sweeps across frequencies to produce sharper images than traditional fixed-frequency sonar. This means less guesswork: distinguish between a rock pile and a lurking grouper effortlessly. The integrated temperature sensor keeps you informed on water conditions, helping predict fish behavior during thermocline shifts.

• Deep Penetration: Reach depths of 1500 feet, ideal for bluewater pursuits.
• Wide Coverage: 20-degree tilt aligns perfectly with hull angles, ensuring optimal signal transmission without cavitation.
• Robust Build: 39-foot cable length offers flexible routing during installation.
• Seamless Integration: 10-pin connector mates effortlessly with compatible Furuno sounders for plug-and-play setup.

Boat owners rave about how this transducer cuts through thermoclines, providing reliable bottom tracking even in choppy seas. It's not just equipment—it's the edge that turns casual outings into record-breaking hauls.

Effortless Thru-Hull Installation for Lasting Results

Installing a thru-hull transducer like the B175M requires care, but following best practices ensures peak performance from day one. Select a spot forward of the propellers, away from strakes or through-hulls that could cause turbulence. Fairing blocks can fine-tune the angle for deadrise matching, preventing air bubbles from disrupting the sonar cone.

Drill precisely, bed the unit with marine sealant, and torque to specs for a watertight seal. Post-install, test in shallow water to verify clear bottom returns—no bubbles or interference. Regular hull cleaning keeps the bronze face pristine, maintaining sensitivity season after season.

"Switched to the B175M and immediately saw fish I was missing before. Installation was straightforward on my 24-foot center console."

Pro tip: Pair with a high-end display for CHIRP's full potential, unlocking multiple frequency overlays for comprehensive coverage.

Why Choose Bronze Thru-Hull for Your Vessel?

Bronze thru-hull designs like the B175M shine on fiberglass hulls in saltwater, offering acoustic transparency superior to plastic while standing up to constant submersion. Unlike in-hull mounts that suffer signal loss, this direct water contact delivers uncompromised power and resolution. For trailered boats or those stored in slips, the flush profile minimizes drag and snag risks.

Compared to high-frequency options, medium CHIRP handles deeper water with better target separation, making it a staple for offshore charters and tournament pros. It's the transducer that grows with your boating adventures, from inshore reefs to canyon edges.

Frequently Asked Questions