Garmin AIRMAR B75M 12° Tilt Bronze Thru-Hull Transducer (010-11636-21)

Introduction

The Garmin AIRMAR B75M 12° Tilt Bronze Thru-Hull Transducer is built for anglers and boaters who demand accurate sonar performance and dependable underwater detection. Featuring a durable bronze flush-mount housing, it is specifically engineered for boats with an 8° to 15° hull deadrise, ensuring the sonar beam remains properly aligned for optimal performance.

Operating within a medium-frequency range of 80–130 kHz, the B75M offers an excellent balance of target detail and depth penetration. When paired with compatible Garmin sonar modules, such as the GSD 26, it supports both traditional sonar and spread spectrum scanning to deliver enhanced fish detection, bottom tracking, and underwater clarity.

Key Features

Medium-Frequency Sonar Performance

• 600 W sonar power output.
• Medium-frequency operation from 80–130 kHz.
• Excellent balance of target detail and depth penetration.
• Ideal for recreational and offshore fishing.

Traditional & Spread Spectrum Sonar

• Supports traditional sonar operation.
• Compatible with spread spectrum scanning.
• Improved fish and structure identification.
• Delivers crisp underwater imaging.

Optimized Hull Installation

• Designed with a 12° tilted internal element.
• Suitable for hull deadrise between 8° and 15°.
• Flush thru-hull mounting minimizes drag.
• Eliminates the need for an external fairing.

Reliable Depth Performance

• Maximum depth capability up to 900 ft.
• Consistent bottom tracking.
• Reliable sonar readings in varying water conditions.
• Excellent target separation throughout the water column.

Wide Sonar Coverage

• Beamwidth of 24° to 16°.
• Broad underwater scanning area.
• Enhanced fish and structure detection.
• Efficient coverage beneath the vessel.

Garmin Compatibility

• Compatible with Garmin sonar systems.
• Works with Garmin GSD 26 and selected sonar modules.
• 8-pin connector for secure installation.
• Seamless integration with compatible Garmin electronics.

Sonar Performance

The Garmin AIRMAR B75M 12° Tilt Transducer delivers dependable medium-frequency sonar performance, making it well suited for anglers seeking detailed underwater imaging without sacrificing depth capability. Its 80–130 kHz operating frequency provides an ideal combination of target resolution and bottom tracking for coastal and offshore waters.

When connected to compatible Garmin sonar equipment, the transducer supports traditional sonar and spread spectrum scanning, helping users identify fish, underwater structures, and bottom contours with greater clarity and confidence.

Usage Instructions

Install the Garmin AIRMAR B75M 12° Tilt Transducer according to the included installation instructions. The transducer is specifically designed for vessels with a hull deadrise between 8° and 15° to ensure proper sonar beam alignment and optimal performance.

Connect the 8-pin transducer to a compatible Garmin sonar module or chartplotter, then configure the sonar settings to match your boating and fishing requirements. Proper installation helps maximize sonar performance while protecting your vessel from potential installation-related damage.

Design & Build

The Garmin AIRMAR B75M features a rugged bronze thru-hull housing designed to withstand demanding marine environments. Its flush-mounted profile minimizes drag while the internally tilted 12° element aligns the sonar beam vertically without requiring an external fairing block, providing efficient installation and long-lasting reliability.

Design Highlights

• Bronze thru-hull construction
• 600 W sonar output
• Medium-frequency operation (80–130 kHz)
• Traditional sonar support
• Spread spectrum scanning compatibility
• Flush-mounted installation
• Internal 12° tilted element
• Suitable for 8°–15° hull deadrise
• Maximum depth up to 900 ft
• 24°–16° beamwidth
• 8-pin connector
• Compatible with Garmin sonar systems
• Reliable bottom tracking
• Enhanced fish and structure detection
• Includes installation instructions

Final Verdict

The Garmin AIRMAR B75M 12° Tilt Bronze Thru-Hull Transducer is an excellent solution for boaters with moderate-deadrise hulls who require dependable medium-frequency sonar performance. Its combination of traditional sonar, spread spectrum scanning compatibility, and accurate bottom tracking provides clear underwater visibility for both navigation and fishing.

With durable bronze construction, optimized installation for 8° to 15° hull deadrise vessels, and seamless compatibility with Garmin sonar systems, the B75M delivers reliable performance and dependable results on every trip.