Airmar B175M Transducer 1kW CHIRP 0° Thru-Hull

Overview

Who This Is For: Serious anglers fishing freshwater lakes and coastal waters on fiberglass or wooden hulls who want dependable medium-frequency sonar with extended depth range. If you're running a Garmin system and need clean fish separation and bottom detail from shallow to deep water, this transducer delivers without complexity.

Product Summary: The B175M is a thru-hull transducer built around medium frequency (85–135 kHz) that gives you the sweet spot between coverage and precision. It'll read fish and structure clearly at depths up to 1,500 feet, and the 0° tilted element automatically corrects for your hull's deadrise so you get maximum signal return without dead zones. At 1 kW of power with CHIRP capability, this is a workhorse transducer that does one job exceptionally well—seeing what's below your boat at speed.

Key Features

• Medium Frequency 85–135 kHz — covers the middle ground between shallow-water precision and deep-water reach — means you get strong fish targets and clear bottom definition whether you're fishing 20 feet or 400 feet.
• 1 kW Power Output — delivers strong, clean signal with minimal noise — critical for maintaining image clarity at speed and in rough conditions.
• Tilted Element Design — the ceramic element is fixed at 0° inside the housing to automatically correct for hull deadrise up to 24° — you install it nearly flush and the transducer self-orients; no guessing, no signal loss to misalignment.
• 16° to 11° Beamwidth — focused cone that covers a defined area beneath the boat — narrow enough for precision, wide enough to keep targets in view when you're moving.
• Depth and Fast-Response Temperature Sensing — dual functionality means you're reading water temp in real time — essential for finding thermoclines and seasonal fish location.
• CHIRP-Ready with 50 kHz Bandwidth — single transducer can operate across a broad frequency range — gives you flexibility to dial in the best frequency for depth and bottom type as conditions change.
• Low-Profile Thru-Hull Housing — minimal drag, sits nearly flush with your hull — maintains clean sonar images even at plane.
• Bronze Housing — corrosion-resistant and durable in freshwater and light saltwater — built to outlast the season.

Specs & What's Included

Compatibility: The B175M connects via Garmin 8-pin Mix & Match connector, meaning it works with modern Garmin fish finders that support CHIRP transducers. If you're unsure whether this fits your Garmin unit, call or text us at (833) 831-4077—we'll confirm compatibility straight away.

Installation: Designed for fiberglass or wooden hulls with up to 24° deadrise. Requires a 3¾" (95 mm) hole for fiberglass/wood hulls or 4⅛" (105 mm) for metal hulls. Usable shaft length is 2.18 inches.

In the Box: Transducer only with Garmin 8-pin connector attached. Cable and mounting hardware sold separately depending on your boat setup.