Garmin GT8HW-IH In-Hull Transducer - 8-Pin
Garmin GT8HW-IH In-Hull Transducer - 8-Pin Product Description
Upgrade your bass boat's sonar game with the Garmin GT8HW-IH in-hull transducer, a smart choice for anglers who demand reliable depth readings even at top speeds. Mounted securely inside the fiberglass hull, this 8-pin powerhouse sidesteps common transom-mount pitfalls like cavitation and drag, delivering crystal-clear traditional sonar performance where it counts most—on the water, chasing trophy fish.
Engineered for real-world fishing scenarios, the GT8HW-IH shines in freshwater environments, scanning down to impressive depths while maintaining pinpoint accuracy. Whether you're blasting across the lake or dialing in slow for structure, this transducer keeps you locked on the action without compromising hull integrity or boat speed.
Technical Specs That Deliver Results
- Mounting Style: In-hull for seamless integration into flat fiberglass sections (0-6° deadrise).
- Power Output: 250 watts to punch through water columns effectively.
- Frequency: High-wide CHIRP (145-230 kHz) for wide coverage and sharp target separation.
- Max Depth: Up to 800 feet in freshwater, perfect for deep-water bass hunts.
- Cable Length: 20 feet for flexible routing inside your vessel.
- Beam Width: 24°-16° for balanced coverage without sacrificing detail.
These specs aren't just numbers—they translate to fewer false readings, better bottom tracking at speed, and more time targeting fish instead of troubleshooting gear.
Standout Features for Serious Anglers
- High-speed depth lock: Say goodbye to erratic readings when you're running wide open—ideal for tournament pros covering vast waters.
- CHIRP technology advantage: Sweeps across frequencies for superior fish arches and structure detail compared to fixed-frequency setups.
- Versatile pairing potential: Combine with compatible all-in-one transducers using an adapter for hybrid setups—depth on the fly, scanning when slowed.
- Clean hull install: No external fouling risks, preserving your boat's sleek lines and hydrodynamic edge.
- Backed by reliability: Expect consistent performance season after season, with straightforward setup using provided fittings and guides.
"Switching to an in-hull like the GT8HW-IH transformed my high-speed runs—no more ventilation noise or lost bottom lock. It's a game-changer for bass boats."
Pro Tips for Flawless Installation
Getting the GT8HW-IH mounted right starts with selecting a flat hull spot free of stringers or ribs. Mix the epoxy precisely, bed the transducer firmly, and route the cable away from interference sources like engines or bilge pumps. Test at idle first, then gradually increase speed to verify readings. Common pitfalls? Air pockets under the unit—press out bubbles during install—or deadrise mismatch, so measure twice. A solid setup means years of trouble-free sonar.
Pro anglers often fair the top slightly for optimal transmission, ensuring maximum energy reaches the water below.
Perfect For These Fishing Scenarios
- Tournament bass fishing: Maintain depth while scouting new water fast.
- Large lake adventures: Probe deep ledges and humps with confidence.
- High-performance boats: Fiberglass hulls where transom mounts falter.
- All-season reliability: Handles freshwater temps without skipping a beat.
What's Included for Easy Setup
- GT8HW-IH transducer unit.
- In-hull mounting fitting.
- Comprehensive documentation.
Frequently Asked Questions
Is the Garmin GT8HW-IH suitable for saltwater use?
Primarily optimized for freshwater up to 800 feet, it performs in saltwater but check your chartplotter's compatibility for best results in brackish or full marine conditions.
What deadrise angles does this in-hull transducer support?
It fits hulls with 0 to 6 degrees of deadrise, common on many bass boats—measure your hull to confirm.
Can I use this with other Garmin transducers?
Yes, pair it with units like the GT30-TM via adapter cable for depth at speed and scanning at rest—dual-transducer heaven for versatile fishing.
How does CHIRP improve readings on this model?
High-wide CHIRP (145-230 kHz) provides wider beams at higher frequencies, revealing finer details on fish and bottom structure than single-frequency sonar.
Does it work well at high boat speeds?
Absolutely—its in-hull design eliminates cavitation, delivering stable depth data up to planing speeds on bass boats.
What's the cable length and how do I route it?
20 feet gives ample reach; secure away from heat, vibration, and electrical noise for interference-free performance.
Do I need special tools for installation?
Basic: drill, sandpaper, epoxy. Follow docs for hole sizing—no fancy gear required for most DIY installs.
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 101240110 Attributes
- Mounting Location: In-Hull Mount
- Number Of Pins: 8 Pin
- Depth: 800 Feet For Freshwater
- Power Rating: 250 Watt
- Frequency Range: 145-230 kHz High CHIRP Operating Frequency
- Supported Angle: 0 To 6 Degree Deadrise
- Cable Length: 20 Feet
Garmin 101240110 Features & Benefits
- Ideal For Bass Boats That Want To Install The Transducer Inside A Fiberglass Hull
- Excellent For Boats Traveling At High Speeds That Want To Maintain Accurate Depth Readings
- 8-Pin Transducer Features High-Wide Chirp Traditional Sonar And Has A Power Rating Of 250 Watt
- Can Be Used In Conjunction With A GT30-TM Transducer And An Adapter Cable So You Can Maintain Depth At High Speeds And Scanning Capabilities At Trolling Speeds
- Provides A Installation Instructions
- Limited 2 Year Warranty
Garmin 101240110 Installation Instructions
Garmin 101240110 Warranties
GT8HW-IH In-Hull Transducer - 8-Pin
GT8HW-IH transducer is ideal for bass boats that want to install the transducer inside a fiberglass hull and not on the transom where cavitation could cause issues. It requires a flat section in the hull to be mounted and is excellent for boats traveling at high speeds that want to maintain accurate depth readings.
The 8-pin transducer features high-wide CHIRP traditional sonar (150-240 kHz) and has a power rating of 250 W. It can be used in conjunction with a GT30-TM transducer and an adapter cable so you can maintain depth at high speeds and scanning capabilities at trolling speeds.
For installation, follow the included instructions carefully to avoid damaging your boat.
It requires a flat part to be installed on the hull, which is very suitable for high-speed vessels that want to maintain accurate depth readings. 8-pin sensor...
Garmin GT8HW-IH In-Hull Transducer - 8-Pin Related Products
Garmin 8-Pin Transducer Extension Cable - 10'Garmin 8-Pin Transducer Extension Cable - 30'
Garmin 8-Pin Transducer to 12-Pin Sounder Adapter Cable w/XID
Garmin Transducer Adapter Cable f/P72, P79, GT15 & GT30 for echoMAP CHIRP
Frequently Asked Questions (FAQ) About Garmin GT8HW-IH In-Hull Transducer - 8-Pin
Who is the Garmin?How to describe Garmin GT8HW-IH In-Hull Transducer - 8-Pin?
What is the power rating of the product?
How many pins exists in the connector of the product?
What is the weight of the product?
Speed feature included to the product?
How to mount or what is the mounting style of Garmin GT8HW-IH In-Hull Transducer - 8-Pin?
This product can read the temprature?
What is the imagining type of the product?
What is the length of cable (feet)?
What is the length of cable?
Is this product supporting CHIRP and what's the type?
Who is the Garmin?
How to describe Garmin GT8HW-IH In-Hull Transducer - 8-Pin?
What is the power rating of the product?
How many pins exists in the connector of the product?
What is the weight of the product?
Speed feature included to the product?
How to mount or what is the mounting style of Garmin GT8HW-IH In-Hull Transducer - 8-Pin?
This product can read the temprature?
What is the imagining type of the product?
What is the length of cable (feet)?
What is the length of cable?
Is this product supporting CHIRP and what's the type?
Save $29 when you buy the Garmin GT8HW-IH In-Hull Transducer - 8-Pin for only $120 from NVN Marine! Same day shipping before 3pm.
Garmin GT8HW-IH In-Hull Transducer - 8-Pin Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Garmin |
| Weight: |
0.87 lb |
| Temperature: |
No |
| Speed Included: |
No |
| Mounting Style: |
In-Hull |
| Imagining: |
Standard |
| Chirp: |
High Wide |
| Cable Length (Feet): |
20' |
| Pins: |
8 |
| Product Manual: | |
| Product Installation: |
Garmin GT8HW-IH In-Hull Transducer - 8-Pin User Reviews
Garmin GT8HW-IH In-Hull Transducer - 8-Pin Shipping & Return
| Shipping Weight: |
0.87 lb |
|---|---|
| Box Sizes: |
3.00 (h) x 6.00 (w) x 6.00 (l) |
| Cubic Feet: |
108.0 |
| Returnable: |
Yes |
| USPS First Class: |
Yes |
| P65: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.



