Garmin 010-11636-21 80-130KHZ 12D Tilt Bronze B75M TH 8P

The Garmin 010-11636-21 80-130KHZ 12D Tilt Bronze B75M TH 8P transducer is purpose-built for serious anglers and boaters who demand professional-grade sonar performance on both freshwater and saltwater vessels. This bronze-housed through-hull transducer delivers the dual-frequency capability modern GPS chartplotters require, giving you simultaneous shallow-water detail and deep-structure definition. Whether you're targeting bass in a tournament, running a commercial operation, or navigating challenging coastal waters, this Garmin transducer provides the reliable signal clarity that separates productive fishing trips from wasted hours on the water.

Operating across the 80–130 kHz frequency range, the Garmin 010-11636-21 excels at bottom composition recognition and fish arch display. The 12-degree cone angle balances wide coverage with pinpoint accuracy—wide enough to map structure quickly, tight enough to resolve individual targets in dense cover. Its bronze construction resists corrosion in saltwater environments and withstands years of thermal cycling without signal degradation. The tilt mounting system allows precise beam angle adjustment through the hull, critical for eliminating deadspots beneath your boat and adapting to different hull materials and boat speeds. At 6 pounds, the assembly integrates smoothly into typical recreational and professional vessels without demanding reinforced mounting infrastructure.

This transducer pairs with Garmin's full suite of networked chartplotters and fishfinders, including GPSMAP and echoMAP series units, via the 8-pin connector standard. Boaters running legacy or current-generation Garmin systems benefit from plug-and-play compatibility without adapter requirements. Installation demands proper through-hull positioning—typically amidships, 12 to 24 inches from the keel—to optimize sonar return while avoiding aeration and hull turbulence. Professional installers and experienced DIY boaters appreciate the straightforward mount design and robust epoxy sealant guidance Garmin provides. Perfect for upgrades on aging systems or complete sonar package builds, the B75M TH delivers tournament-proven reliability at working depths to 1,200 feet.