Garmin B150M Bronze 20° Thru-Hull Transducer - 300W, 8-Pin

Discover Superior Underwater Clarity with the Garmin B150M Bronze Thru-Hull Transducer

Imagine gliding through coastal waters or chasing deep-water species, with crystal-clear images of fish schools, structure, and bottom contours right on your Garmin display. The Garmin B150M Bronze 20° Thru-Hull Transducer delivers that edge for serious anglers and boaters. Crafted with a durable bronze housing, this 300W CHIRP powerhouse cuts through fiberglass or wood hulls seamlessly, thanks to its 20° tilted element that matches 16-24° deadrise angles—no messy fairing blocks required.

What sets it apart? Traditional fixed-frequency sonar often muddies targets in varied conditions, but CHIRP technology sweeps across 95-155 kHz, painting sharper separations and deeper penetration. Whether you're targeting snapper at 500 feet or scouting wrecks, it reveals details others miss, all while sensing water temperature for prime bite windows.

Engineered for Real-World Marine Adventures

Boaters know thru-hull mounts shine for speed and accuracy—no drag, no interference. This model's flush design hugs your hull, with a 39-foot cable giving flexibility for clean routing to your Garmin fishfinder or chartplotter. The 8-pin connector plugs straight into popular units, firing up wide 26° low-frequency beams for bottom hunting and tighter 17° high-frequency cones for precise fish ID.

• Depth Mastery: Reliable readings to 600 feet continuous, peaking at 1,500 feet in ideal conditions—perfect for offshore runs.
• Versatile Performance: Bronze withstands saltwater abuse; temp sensor tracks thermoclines that hold trophy fish.
• Hull Compatibility: 2-inch shaft slips into standard holes, supporting moderate deadrises without custom tweaks.

Pro tip: Pair it with a Garmin ecosystem for split-screen sonar overlays, turning your helm into a command center.

Streamlined Installation for Weekend Warriors and Pros

Setting it up feels straightforward, even sans yard lift. Drill precisely, bed in marine sealant, and torque to spec—detailed instructions guide you. That 20° tilt auto-corrects for hull angle, minimizing air bubbles at speed. Common pitfalls? Over-tightening or skipping fairing; here, the design dodges both. Expect 1-2 hours for a solo install on a trailerable boat.

Why Boaters Swear by This Transducer Over Basics

Entry-level CHIRP isn't hype—it's the sweet spot for boats under 40 feet punching into 300-800 foot zones. Skip weaker transoms; this thru-hull thrives at 30+ knots, locking targets amid chop. Users rave about bait balls popping in high-def, versus fuzzy echoes from old-school 200 kHz singles. Bronze laughs at corrosion, outlasting plastic rivals in brackish bays.

"Swapped my old pod-mount for this—fish arches went from blobs to arrows. Temp logs nailed the striper blitz." – Coastal Captain

For upgrades, it breathes life into aging Garmin MFDs, maximizing your investment without full-system swaps.

Frequently Asked Questions