Garmin M265LH Plastic In-Hull Mount Transducer w/Depth - 12-Pin
Garmin M265LH Plastic In-Hull Mount Transducer w/Depth - 12-Pin — Product description
Upgrade your boating experience with a reliable in-hull transducer designed for crystal-clear underwater imaging in demanding conditions. This powerhouse unit delivers exceptional performance for anglers and navigators who demand precision at depths up to 3,000 feet. Its dual-frequency CHIRP technology sweeps across wide ranges, revealing fish, structure, and bottom details with unmatched clarity, even in rough waters where traditional sonar falls short.
Unlike thru-hull options that require hull penetration, this in-hull mount slips seamlessly inside your vessel's hull, protecting it from damage during trailering or beaching. Ideal for boats with deadrise angles from 0 to 30 degrees, it ensures stable signal transmission without compromising your hull's integrity. Mariners appreciate its robust 1,000-watt power handling, which punches through thermoclines and provides reliable readings in deep offshore pursuits.
Technical Specifications at a Glance
- Mount Type: In-Hull
- Connector: 12-Pin
- Max Depth: 3,000 feet
- Power: 1,000 Watts
- Frequency: 42-65 kHz (Low CHIRP), 130-210 kHz (High CHIRP)
- Beamwidth: 16-25° / 6-10°
- Cable Length: 39 feet
- Deadrise Range: 0-30°
These specs make it a go-to choice for serious offshore fishing, wreck diving reconnaissance, or mapping uncharted seabeds. The narrow beam angles focus energy for sharper separation of targets, helping you distinguish bait schools from larger game fish effortlessly.
Why This Transducer Stands Out on the Water
- Superior Image Resolution: Narrow beam design cuts through noise, delivering crisp details on your chartplotter—perfect for spotting structure in murky coastal waters or deep blue expanses.
- Versatile CHIRP Coverage: Low-frequency range penetrates deeper for bottom contouring, while high-frequency excels at shallow-water precision and baitfish detection. Switch seamlessly for all-day versatility.
- Hull-Friendly Installation: Bonds directly to the hull interior with epoxy (instructions included), minimizing drag and maintenance. Note: Best for solid fiberglass hulls; avoid cored constructions to prevent delamination risks.
- Extended Reach: 39-foot cable gives flexibility for routing to your helm station, even on larger center consoles or sportfishers.
- Built for Endurance: Engineered with durable plastic housing to withstand constant water pressure and vibration, ensuring years of reliable service.
Real-World Applications
Picture this: You're chasing trophy tuna 1,500 feet down. Traditional sonar blobs distant marks into guesswork, but this unit paints a vivid picture of the hook-up zone. Or, inshore, toggle to high CHIRP for pinpointing flounder hides around oyster bars. Boaters report fewer false readings and quicker hooksets, turning good days into legendary ones.
Smart Installation for Peak Performance
Getting it right starts with hull prep: Clean the mounting area thoroughly and select a flat spot forward of props for optimal signal. Mix and apply marine-grade epoxy per guidelines, then secure and route the cable away from interference sources like engines. Test in shallow water post-install to verify bottom tracking. Pro tip: Dead reckoning your deadrise angle beforehand ensures dead-on alignment, maximizing beam coverage.
"Smooth sailing begins with precise setup—users who follow the steps rave about interference-free sonar from day one."
Seamless Integration with Your Garmin Ecosystem
Plugs right into popular Garmin marine displays and modules via the 12-pin connector. Pairs effortlessly with advanced multifunction units and premium sonar black boxes, unlocking full CHIRP potential without adapters. Verify your model's sonar port matches for plug-and-play simplicity.
Frequently Asked Questions
What makes CHIRP technology better than traditional sonar in this transducer?
CHIRP transmits a continuous sweep of frequencies, providing wider bandwidth and finer target resolution compared to fixed single-frequency sonar. This results in clearer fish arches, better bottom separation, and reduced clutter for more accurate readings across depths.
Is this in-hull transducer suitable for all boat hull types?
It's optimized for solid fiberglass hulls with 0-30 degree deadrise. Not recommended for cored hulls, aluminum, or wood to avoid signal loss or structural issues.
How deep can I reliably fish with this 1kW unit?
Rated to 3,000 feet maximum depth, it excels in deep-water scenarios like offshore trolling or canyon fishing, though performance varies with boat speed, water conditions, and display settings.
Does the beamwidth affect what I see on my fishfinder?
Yes—the low freq 16-25° beam covers wider areas for searching, while the high freq 6-10° narrow beam zooms in for detailed inspection, giving you control over coverage vs. detail.
Can I install this myself, or do I need a professional?
DIY-friendly with included instructions for mechanically inclined boaters. Involves hull cleaning, epoxy bonding, and cable routing. Pros handle complex hulls or electronics integration.
What maintenance does this transducer require?
Minimal—inspect cable connections seasonally and clean the hull exterior if growth affects internal signal. Avoid high-pressure washing directly on the mount area.
Will hull speed impact performance?
Best results at speeds under 20 knots; higher speeds may cause minor signal attenuation in in-hull setups due to hull flex or cavitation.
Equip your vessel with marine-grade sonar that doesn't just detect—it reveals. From weekend warriors to charter captains, this transducer elevates your on-water intelligence, helping you find and catch more, safer and smarter.
Garmin make products that are engineered on the inside for life on the outside. We bring GPS navigation and wearable technology to the automotive, aviation, marine, outdoor and fitness markets. We believe every day is an opportunity to innovate and a chance to beat yesterday. We offer products with essential utility, leading-edge technologies, compelling features, and exceptional ease-of-use to create clear differentiators our customers appreciate and desire.
Garmin 101238020 Attributes
- Mounting Location: In-Hull Mount
- Number Of Pins: 12 Pin
- Depth: 3000 Feet
- Power Rating: 1000 Watt
- Frequency Range: 42-65 kHz For CHIRP Low And 130-210 kHz For CHIRP High Operating Frequency
- Supported Angle: 0 To 30 Degree Deadrise
- Cable Length: 39 Feet
Garmin 101238020 Features & Benefits
- Best Performing 1 Kilo Watt In-Hull, This Narrow Beam Transducer Provides Crisp Image Detail
- Transducer Has A Depth Of 3,000 Feet
- Transducer Kit Comes With Installation Instructions
- Transducer Supports A 0 To 30 Degree Deadrise
- Limited 1 Year Warranty
Garmin 101238020 Warranties
M265LH Plastic In-Hull Mount Transducer w/Depth - 12-Pin
Garmn's best performing 1 kW in-hull, this narrow beam transducer provides crisp image detail.
The transducer has a depth of 3,000 feet; an operating frequency of 42 to 65 kHz and 130 to 210 kHz; a beamwidth of 16 to 25 degrees or 6 to 10 degrees; and a 0 to 30 degree deadrise.
Transducer kit comes with installation instructions. Follow the instructions carefully to avoid damaging your boat.
*Not recommended for cored-hull vessels
Compatible Devices:
- GPSMAP® 7607xsv, 7608xsv, 7610xsv, 7612xsv, 7616xsv
- GSD™ 25 Premium Sonar Module
M265 chirp depth sensor, depth only, Mfg#010-12380-20, narrow beam width broadband chirp technology, 42-60KHz and 130-210KHz. Airmar M265 style liquid-filled hull...
SKU: NVN-57383
MPN: 010-12380-20
UPC: 753759142421
Technical specifications
| Brand | Garmin |
| Model | Garmin M265LH Plastic In-Hull Mount Transducer w/Depth - 12-Pin |
| SKU / MFR# | 57383 |
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