Raymarine B164 Tilted Element Through-Hull Transducer, 1kW, 50/200 kHz, Depth/Temp, Bronze, 8-Pin DSM Connector

Overview

The Raymarine B164 is a bronze through-hull sonar transducer for Raymarine CP370 and legacy DSM-style fishfinder systems, with 1 kW RMS power and dual 50/200 kHz operation. It reads depth and water temperature, and its tilted element layout helps aim the sonar beam straight down through the hull deadrise without using a fairing block.

This low-profile transducer suits sportfishing boats, trailerable powerboats, and fiberglass or wood hulls where a fairing block is not practical. The housing protrudes less than 6.35 mm outside the hull, which helps reduce drag and protects the fitting around trailer bunks and rollers. The B164 uses a 30 ft. cable with a Raymarine 8-pin DSM-style connector.

Key features

• Bronze through-hull body for fiberglass and wood hull installations.
• 1 kW RMS output with 50/200 kHz dual-frequency sonar for depth finding and fishfinding work.
• Built-in water temperature sensing, so one through-hull fitting can handle depth and temperature data.
• Tilted element construction helps compensate for hull deadrise and keeps the sonar beam aimed downward.
• Low-profile housing extends less than 6.35 mm outside the hull, reducing drag compared with a fairing-block installation.
• 22° beam width at 50 kHz and 6° beam width at 200 kHz for broad low-frequency coverage and narrower high-frequency detail.
• Direct 8-pin DSM-style connection for Raymarine CP370, CP300, DSM300, DSM30, and DSM250 systems.
• Compatible with other Raymarine systems when the correct optional transducer adapter cable is used.

Variants

The B164 is offered in three offset options so the transducer can match the deadrise angle at the mounting location on the hull.

All variants share the same B164 through-hull format, bronze body, 1 kW 50/200 kHz sonar operation, depth and temperature sensing, and 30 ft. cable. The offset angle and supported deadrise range are the parts that change between versions.

• A102137: 0° offset for 0° to 7° deadrise. This version fits flatter mounting areas where little or no element tilt is needed to keep the beam pointing down.
• A102112: 12° offset for 8° to 15° deadrise. This version suits moderate V-hull locations where the transducer needs built-in tilt to compensate for the hull angle.
• A102113: 20° offset for 16° to 24° deadrise. This version is used on steeper V-hull sections where more offset is needed at the through-hull position.

Installation and fit

Select the offset by measuring the hull deadrise at the exact mounting location, not by using the boat model alone. A centerline location, a spot farther outboard, and a location near the transom can all have different deadrise angles on the same vessel.

The B164 is a through-hull installation, so hull access, cable routing, and sealing method should be planned before drilling. The low-profile shape is useful on trailered boats and on fast fishing hulls where water flow across the transducer face matters.

System compatibility

The transducer is fitted with a Raymarine 8-pin DSM-style connector for direct use with CP370, CP300, DSM300, DSM30, and DSM250 sonar modules. For Axiom or other Raymarine displays and modules, confirm the sonar input type and use the proper adapter cable when required.

Use on board

This transducer is a good match for anglers who want stronger conventional sonar performance than a 600 W installation can give, especially for trolling, bottom fishing, and reading structure in deeper water. It also works well for boats where a fairing block would add too much drag or interfere with trailer support points.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

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.

Learn more.

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.

Learn more.

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.

Learn more.