Garmin B117 Bronze Thru-Hull Depth/Temp Transducer, 8-Pin, 600W, 50-200 kHz

Overview

The Garmin 010-10182-21 is a bronze thru-hull depth and water-temperature transducer with an 8-pin connector for traditional 50/200 kHz sonar. It is a 600 W unit with a 45-degree beam at 50 kHz and a 12-degree beam at 200 kHz, and it is specified for depth performance from 800 to 1,200 ft.

It uses a low-profile housing that extends about 5 mm (3/16 in.) outside the hull and is intended for fiberglass and wood hulls. The mounting location should have 0 to 7 degrees of deadrise, and installation requires a 2 in (51 mm) thru-hull hole; it should not be used on metal hulls.

Key features

• Traditional dual-frequency sonar: 50/200 kHz at 600 W for depth with water-temperature sensing
• Beam coverage options: 45-degree beam at 50 kHz and 12-degree beam at 200 kHz
• Low-profile bronze housing with about 5 mm (3/16 in.) extending outside the hull to keep drag down at speed
• Intended for fiberglass and wood hulls; not suitable for metal hull installations
• Fits 0 to 7 degrees of deadrise at the mounting location
• Requires a 2 in (51 mm) thru-hull hole and inside access for the retaining nut and cable routing
• 8-pin connection with an attached 39 ft cable for routing to the sounder or sonar module
• Depth and temperature only, with no speed sensor

Compatibility and fit

This transducer connects to Garmin sonar equipment that accepts an 8-pin traditional transducer plug. If the sounder has a 6-pin transducer port, an adapter cable is required for connection.

Because it is a 0-degree, low-profile thru-hull style, confirm the deadrise angle at the planned mounting spot is within the 0 to 7 degree range. Plan for a 2 in (51 mm) hull penetration and enough clearance on the inside to tighten the hardware and route the cable without sharp bends.

Installation and setup

Thru-hull transducers need a clean-water location for consistent readings, so pick a spot that stays submerged and avoids turbulent flow from strakes, steps, intakes, and other thru-hulls. Route the cable away from ignition wiring and high-current runs where possible, and leave a service loop so connections are not strained.

Use proper marine sealing practices for the hull penetration and recheck the retaining nut after the first few outings, especially on boats that see heavy vibration or frequent trailering.

Use on board

This is a straightforward match for boats that want dependable bottom tracking and water temperature while running at speed, including coastal cruising and fishing setups using traditional 50/200 kHz sonar. It fits well when you have room for a thru-hull install and want the low-profile exterior shape that keeps drag and snag risk down.

Maintenance and care

Keep the face of the transducer free of marine growth for accurate depth and temperature readings. During routine bottom checks, inspect the outside surface for fouling and confirm the inside hardware and bedding remain secure and dry.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.