Garmin GT8HW-TM
Garmin GT8HW-TM
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Garmin GT8HW-TM
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“I upgraded to the Garmin GT56UHD and the clarity is unbelievable. You can literally see fish moving around structure. Hard Rig Marine helped me pick the right setup and it’s been spot on since day one.”
Michael R. — Cairns, QLD -
“I’m not a tech person, but the team made it super easy to install my GT54UHD transducer. Works perfectly with my ECHOMAP — I’ve never had sonar this clear in the estuary before!”
Jenny L. — Mandurah, WA -
“The Airmar B175M changed my whole deep drop setup. Way better definition and stability compared to my old transducer. You get what you pay for — and these guys know their stuff.”
Ben T. — Newcastle, NSW
GARMIN GT8HW-TM: High-Wide CHIRP Traditional Sonar Transducer (250W)
The Garmin GT8HW-TM is a high-performance **Traditional Sonar transducer** perfect for shallow water fishermen who require clear bottom definition and crisp, wide fish arches. This 8-pin unit features **High-Wide CHIRP Traditional Sonar (145–230 kHz)** and has a power rating of **250 W**, providing depths up to **800 feet (freshwater)**. The wider beam width (up to 24 degrees) delivers a significantly larger coverage area beneath the boat.
HIGH-WIDE CHIRP CLARITY & COVERAGE
The GT8HW-TM is specialized for freshwater and inshore fishing applications, where maximizing coverage area and target separation is crucial.
KEY SONAR & PERFORMANCE FEATURES
- High-Wide CHIRP: Operates across the 145–230 kHz band, ensuring excellent target separation and definition.
- Wide Coverage: Features a beam angle up to **24 degrees**, providing a large coverage area to maximize the chance of locating fish.
- Deep Capability: Achieves depth capability up to **800 feet** in freshwater.
- Versatile Mounting: Can be mounted on the transom or a trolling motor, with an **in-hull mount** option also available.
INSTALLATION AND CONNECTIVITY
The GT8HW-TM is a reliable, plug-and-play transducer using the 8-pin connector.
- **8-Pin Connector:** Uses the 8-pin connector for power and data output.
- **Cable Length:** Includes a robust **20-foot cable** for flexible routing.
Inverell Boating Centre Expert Note:
The GT8HW-TM is a dedicated Traditional Sonar unit (no scanning capability) optimized for the high-wide frequency range (145–230 kHz). This is the best choice when maximum bottom coverage in relatively shallow water is the priority. Ensure your Chartplotter has a compatible 8-pin port and does not require ClearVü or SideVü from this transducer.
Specification in detail
Specification in detail
General & Physical
PART NUMBER: 010-12401-00
NUMBER OF PINS: 8-pin
CABLE LENGTH: 20 ft (6.1 m)
INSTALLATION: Transom or Trolling Motor Mount (In-Hull option also supported)
SUPPORTED TRANSOM ANGLES: 0°–70° degree transom
Sonar Capabilities (Traditional Only)
SONAR TYPE: Traditional CHIRP
TRADITIONAL POWER: 250 W
MAXIMUM DEPTH (FRESHWATER): 800 ft (244 m)
FREQUENCY: CHIRP High Wide (145-230 kHz)
BEAMWIDTH: 24°–16°
DEPTH/SPEED/TEMPERATURE: Depth and Temperature
Inverell Boating Centre Technical Summary: The GT8HW-TM is a specialized 8-pin transducer providing 250W power for Traditional Sonar only. It excels in shallow-to-mid depth freshwater applications, featuring High-Wide CHIRP for maximum coverage (up to 24° beamwidth) and clear target separation.
Warranty / Availability of Repair Facilities & Parts
Warranty / Availability of Repair Facilities & Parts
AU Warranty / Availability of Repair Facilities & Parts
Garmin Warranty / Availability of Repair Facilities & Parts
On this page, Garmin customers in Australia will find detailed warranty information; information regarding availability of repair facilities and parts including for out-of-warranty service; other important details regarding repair or replacement of a Garmin product; and how to contact Inverell Boating Centre for further information.
On this page
- Limited Warranty
- Availability of Repair Facilities & Parts (Out of Warranty)
- Repair or Replacement of a Garmin Product
- Additional Resources
- Contact for Further Information
Limited Warranty
This warranty is provided by Garmin Australasia Pty Ltd.
Application of Australian Consumer Guarantees
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure.
The benefits under this Limited Warranty are in addition to other rights and remedies under applicable law. Phone: 0417 159 205.
One-Year Consumer Products Limited Warranty
Non-aviation products are warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within this period, Garmin Australasia will, at its sole option, repair or replace any components that fail in normal use at no charge for parts or labour (customer responsible for transportation).
Warranty Exclusions
- Cosmetic damage such as scratches, nicks, and dents.
- Consumable parts (batteries, etc.) unless damage occurs due to defects in materials or workmanship.
- Damage from accident, abuse, misuse, water, fire, or external causes.
- Service by non-authorised providers.
- Modifications or altered units without written permission.
- Damage caused by non-Garmin cables or accessories.
Garmin reserves the right to refuse warranty claims for products obtained or used in contravention of local laws. Map accuracy and completeness are not guaranteed.
Warranty Process
- Contact Inverell Boating Centre Support to request an RMA number.
Email: inverellboatingcentre.cwa@gmail.com
Phone: 0417 159 205
Provide your unit serial number, return address, and contact number.
- Ship the unit with RMA number to Garmin or Inverell Boating Centre.
INVERELL BOATING CENTRE
Attn: Warranty / Returns:
10a Swanbrook Rd,
Inverell NSW 2360,
Australia
Availability of Repair Facilities & Parts (Out of Warranty)
Garmin products include complex integrated components. Repairs of parts such as cracked screens or integrated bands may not be possible outside Garmin factory conditions. Therefore, facilities or spare parts may not always be available for repair of such components.
Where an out-of-warranty service is required, Garmin Australasia or INVERELL BOATING CENTRE may offer to sell a replacement unit or Garmin Refurbished product. This applies only to out-of-warranty service and not to consumer guarantees under the Australian Consumer Law.
Repair or Replacement of a Garmin Product
Australian Consumer Law Notice:
- Repair or replacement of goods capable of retaining user data may result in loss of that data.
- Goods presented for repair may be replaced with refurbished goods of the same type rather than repaired. Refurbished parts may be used to repair goods.
Additional Resources
- Parallel imports: accc.gov.au/buying-parallel-imports
- Proof of purchase: accc.gov.au/receipts-proof-of-purchase
- Identifying genuine business: accc.gov.au/identifying-a-genuine-business
Contact for Further Information
For all warranty or out-of-warranty enquiries, please contact:
INVERELL BOATING CENTRE
www.inverellboatingcentre.com
10a Swanbrook Rd, Inverell NSW 2360, Australia
Phone: 0417 159 205

Verified Customer Feedback
Excellent
4.8
/ 5
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“I run dual Garmin units and the thru-hull transducer from Hard Rig gives me crystal bottom lock even at 25 knots. Couldn’t be happier with the setup and advice.”
Shaun K. — Townsville, QLD
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“I was worried about installing a thru-hull model, but the support from Hard Rig was awesome. The Airmar B60 works flawlessly on my fibreglass hull — depth readings are spot on.”
Emily P. — Hobart, TAS
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“Just fitted a GT15M-TM to my tinnie and I’m blown away by the detail. Picks up structure I never knew was there. Shipping was fast and everything came ready to install.”
Darren F. — Perth, WA
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