Garmin GT17M-THF Thru-Hull CHIRP Transducer, 1kW, 8-Pin, Stainless Steel

Overview

The Garmin GT17M-THF is a 1 kW stainless steel thru-hull transducer that runs medium band CHIRP (80 to 165 kHz) through an 8-pin connection for traditional sonar depth and target returns.

It covers a 9° to 18° beamwidth and is rated for depth performance up to 2,400 ft in freshwater and 1,800 ft in saltwater. Depth and water temperature sensing are built in, and the attached cable is 50 ft for routing back to a compatible Garmin display or sonar module.

Because the element is built with a fixed internal tilt, the beam can be kept closer to level with the waterline on hulls with different deadrise angles, which helps readings stay consistent when the boat is moving.

Key features

• 1 kW medium band CHIRP frequency range: 80 to 165 kHz
• Beamwidth: 9° to 18°
• Rated maximum depth: up to 2,400 ft in freshwater and 1,800 ft in saltwater
• Flush thru-hull stainless steel housing with tilt options to match hull deadrise
• 8-pin connector with 50 ft cable for typical Garmin sonar wiring runs
• Built-in depth and water temperature sensing
• Auto-ID support for plug-and-play recognition on supported Garmin sonar systems

Variants

This transducer is offered with different internal tilt angles so the sonar beam can be aligned to the waterline on a range of hull deadrise angles.

All versions share the same 1 kW medium band CHIRP (80 to 165 kHz), stainless steel thru-hull body, 8-pin connection, 50 ft cable, and depth and temperature sensing. The tilt angle is the selection point.

• 010-02930-00: Tilt 0°. Fits hull deadrise angles from 0° to 7° at the mounting location, common on flatter bottoms and some planing hulls.
• 010-02930-01: Tilt 12°. Fits hull deadrise angles from 8° to 15°, a typical range for many deep-V bay boats and offshore center consoles.
• 010-02930-02: Tilt 20°. Fits hull deadrise angles from 16° to 24° for steeper V hull sections where a straight element would point off-axis.

Installation and setup

This is a thru-hull installation below the waterline, so placement matters. Mount it in clean water away from strakes, intakes, discharges, and anything that feeds air or turbulence to the face of the transducer.

Cutout size is 98 mm (3 7/8 in.) in fiberglass and 101 mm (4 in.) in metal hulls. Use a flexible, fast-cure marine sealant rated for below-waterline fittings, then check for leaks after launch before leaving the boat in the water for an extended period.

For 12° and 20° tilt models, the top cap arrow needs to point toward the keel so the internal angle offsets the hull deadrise correctly. Route the cable away from engine components and high-current wiring to reduce sonar noise, and plan for a chartplotter software update as part of the install.

Hull materials and corrosion considerations

The stainless steel housing can be installed in fiberglass, wood, composite, aluminum, or steel hulls. When mounting in aluminum or steel, galvanic isolation components are used between the housing and the hull to help prevent corrosion around the fitting.

What’s included

• GT17M-THF thru-hull transducer
• Jam nut
• Spacer
• Washers
• Set screws
• Galvanic isolation components
• Documentation

Maintenance and care

Keep growth off the transducer face for consistent readings. Water-based anti-fouling paint can be used around the installation area, but avoid ketone-based paints and harsh solvents when cleaning. A soft brush and mild detergent are usually all it needs.

On-the-water use

This transducer is a good match for boats that want solid medium-band CHIRP performance for finding structure, tracking bottom at speed, and working bait and marks in coastal and offshore depths. The tilt options matter most when you are trying to hold clean bottom and consistent targets on a V hull.

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We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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