Airmar B175L Transducer 1kW CHIRP 0° Thru-Hull

Overview

Built for anglers running smaller center consoles, open boats, and stepped hulls who need reliable depth and temperature data without overcomplicating their electronics setup. The B175L pairs low-frequency sonar with a compact thru-hull design that sits nearly flush with your hull, keeping your boat cleaner while delivering accurate readings at speed.

This is a single-frequency, CHIRP-ready transducer designed to give you solid deep-water performance in a package sized for boats up to 36 feet. The 40–60 kHz range excels at tracking structure and bottom composition, and the 1 kW power output punches through in deeper water. It's built to work straight into your Garmin system with an 8-pin connector—no adapters needed.

Key Features

• Low-Frequency CHIRP Sonar (40–60 kHz) — sends a continuous sweep of frequencies instead of a single tone, giving you better target separation and cleaner images — you'll distinguish individual fish from bait balls and see hard bottom versus soft bottom with confidence.
• 1 kW Transducer Power — delivers strong acoustic output for deep-water work and maintains signal integrity even at trolling speeds — critical if you're fishing offshore structure or suspended fish.
• Tilted Element Design (0° angle) — the ceramic element inside the housing is factory-angled to match your hull's deadrise, so the sonar beam points straight down even on hulls with significant angle — you get maximum echo return and dead-accurate depth without recalibration.
• Low-Profile Thru-Hull Housing — installs nearly flush with your hull, reducing turbulence and underwater noise that can degrade sonar quality at speed — your screen stays sharp and clean even at plane.
• Depth and Water-Temperature Sensing — tracks bottom and temp changes in real time, helping you identify thermal breaks and locate temperature-sensitive species.
• 32° to 21° Beamwidth — wider cone at shallow depths, narrower at depth, giving you excellent coverage and precision throughout the water column.
• Bronze Housing — purpose-built for fiberglass and wood hulls; resists corrosion in saltwater and brackish environments without sacrificing durability.
• 2,500-Foot Max Depth — rated for deep-water work if your boat ventures into blue water or operates over offshore structure.
• Garmin 8-Pin Connector — direct plug-and-play compatibility with Garmin CHIRP-enabled fish finders — no proprietary adapters or cross-platform hassles.

Specs & What's Included

Compatibility: This transducer is built for Garmin fish finders with 8-pin CHIRP transducer ports. It will not work with Lowrance, Humminbird, or Simrad systems. Confirm your Garmin unit supports CHIRP-ready transducers before ordering. Not sure if this works with your setup? Call or text us at (833) 831-4077 — we'll tell you straight.

Installation Requirements: The B175L installs thru-hull on fiberglass or wood hulls with a 3-3/4" hole. Maximum hull deadrise is 24°. Usable shaft length is 2.80 inches. For metal hulls, you'll need the stainless steel version (SS175L) instead.

In the Box: Transducer only. You'll need a separate 8-pin Garmin transducer cable to connect this to your fish finder head unit.