Airmar M265LH Transducer CHIRP In-Hull Garmin

Overview

Built for serious offshore and deep-water anglers running Garmin electronics on boats up to 36 feet. If you're targeting species that demand specific frequencies—bluefin tuna, squid, cod, or deep-structure walleye and stripers—and you don't want to drill through your hull, this is your transducer.

The M265LH is an in-hull CHIRP transducer that gives you 103 kHz of total bandwidth across two frequency bands, letting you switch between deep-water scanning and tight structure separation without changing hardware. One kilowatt of power reaches 3,000 feet on low frequency, and the narrow high-frequency beam cuts through clutter to show you individual fish holding in cover. Install it inside your hull with the included tank—no hole saw required—and get professional-grade sonar performance.

Key Features

• Dual-band CHIRP architecture — covers 42-65 kHz low frequency plus 130-210 kHz high frequency in a single transducer — you get the range and bottom-penetration of low frequency plus the precision and target separation of high frequency without swapping hardware.
• 1 kW power output — reaches 3,000 feet on low frequency and 1,000 feet on high frequency — critical for deep offshore work and cutting through thermoclines where structure and suspended fish live.
• Narrow high-frequency beamwidth (10° to 6°) — pinpoints tight-holding fish in structure and distinguishes individual targets in heavy cover — the difference between seeing a pile and seeing the fish in it.
• Wide low-frequency beamwidth (25° to 16°) — covers more bottom area on your first pass, letting you scan deeper structure and find productive zones faster in 500+ feet of water.
• In-hull installation with deadrise-cut mounting tank — no hull penetration means no drilling, no potential leaks, and full portability if you lift or trailer your boat — ideal for trailered center consoles and lifted sportfish boats.
• Garmin 12-pin CHIRP-ready connector — integrates directly with current Garmin fish finders and chartplotters — uses the same cable as other Garmin CHIRP transducers for straightforward installation.
• Species-specific frequencies — includes 60 kHz for bluefin tuna, 133 kHz for squid, 175 kHz for cod, plus everything in between — dial in the exact frequency your target species responds to.

Specs & What's Included

Compatibility: Garmin fish finders and chartplotters with 12-pin CHIRP transducer connectors. Solid fiberglass hulls only. Accommodates deadrise angles up to 30° and boats up to 36 feet. Not sure if this works with your setup? Call or text us at (833) 831-4077 — we'll tell you straight.

In the Box: M265LH transducer, mounting tank cut to deadrise angle, Garmin 12-pin Mix & Match cable, and installation hardware. Garmin fish finder and display are sold separately.