Lowrance B285M Medium CHIRP Bronze Thru-Hull 9-Pin

Imagine cruising through choppy offshore waters, your fishfinder painting a crystal-clear picture of the underwater world below. That's the kind of reliability the Lowrance B285M Medium CHIRP Bronze Thru-Hull transducer delivers, helping serious anglers and boaters spot structure, bait schools, and trophy fish with unmatched precision. Built tough from bronze for saltwater durability, this 9-pin powerhouse steps up your sonar game without the hassle.

Unlock Superior Fishfinding with Medium CHIRP Technology

The magic lies in its 85-135 kHz medium-frequency CHIRP range, striking the perfect balance for everything from coastal reefs to mid-depth bluewater hunts. Unlike traditional single-frequency transducers that miss the details, CHIRP sweeps across frequencies to deliver sharper images, wider coverage, and better target separation. You'll distinguish between a big striper and a school of shad faster than ever, even in murky conditions.

• Exceptional Depth Performance: Probes down to hundreds of feet, ideal for offshore trolling or wreck diving.
• Integrated Temp Sensor: Real-time water temperature readings to track thermoclines where fish hang out.
• Bronze Construction: Corrosion-resistant housing thrives in harsh marine environments, from the Gulf Stream to the Pacific swells.

Seamless Thru-Hull Installation for Any Hull

Installing the B285M isn't rocket science—it's designed for DIY boat owners with basic tools. Fair the housing to your hull's deadrise for a flush fit, mix up some marine sealant, and bed it in securely. The 9-pin connector plugs straight into compatible Lowrance chartplotters, firing up high-definition sonar in minutes. Pro tip: Angle it slightly forward (about 5 degrees) to account for your boat's pitch at speed, maximizing bottom tracking.

Works flawlessly on fiberglass, wood, or even aluminum hulls up to 4 inches thick. Just ensure your thru-hull hole matches the 2-inch diameter—no fairing block needed for most setups, keeping things simple and clean.

Real-World Edge Over Standard Transducers

Anglers who've swapped out older units rave about the B285M's clarity. Picture this: You're marking fish on a 20-fathom ledge, and instead of blobs, you see tails waving and arcs popping off the screen. Its wide beam angle excels at locating scattered gamefish, while the narrow beam slices through clutter for precise bottom contour reads. Pair it with your Lowrance display's advanced features like StructureScan or FishReveal, and you're basically cheating at fishing.

In rough seas? The fast-response elements minimize air bubbles and cavitation, so your readings stay rock-solid even at 30 knots.

Long-Lasting Performance You Can Count On

Backed by a solid warranty, this transducer shrugs off UV exposure, electrolysis, and constant submersion. Routine checks—like wiping the face after hauls and inspecting the cable for chafe—keep it humming season after season. Many captains run them for years without a hiccup, making it a smart investment for tournament pros or weekend warriors alike.

Frequently Asked Questions

Ready to elevate your on-water adventures? The Lowrance B285M turns guesswork into precision, putting more fish in your livewell.