Raymarine P66 Transom Mount Triducer, For ST40, 200kHz, 10m Cable

Overview

The Raymarine E26028-PZ is a P66 transom mount triducer for Raymarine instrument systems, giving the helm depth, boat speed, and water temperature data from one stern-mounted sensor.

This unit is made for boats where a transom installation is preferred, especially outboard and I/O powerboats. The P66 housing uses a rounded, hydrodynamic shape to keep water flow cleaner across the transducer face, which helps maintain more useful readings while the boat is moving.

The integrated 30 ft (10 m) cable gives enough reach for many console and cockpit instrument layouts without adding an extension immediately. It connects to compatible Raymarine instrument setups that use analog depth, speed, and temperature inputs, including Raymarine i40 Bidata, i50 Tridata, iTC-5, and similar systems.

Key features

• Measures depth, speed, and water temperature from a single transom mount sensor.
• P66 transom mount format suits many outboard and I/O powerboats where through-hull installation is not preferred.
• Rounded housing helps water pass smoothly under the transducer face for steadier depth and speed readings underway.
• Recessed water-flow channel helps protect the paddlewheel from floating debris and minor obstructions.
• Plastic release bracket helps protect the transducer if it is struck while mounted on the transom.
• Tool-free removal allows the unit to be taken off for cleaning, service, or storage.
• 30 ft (10 m) cable supports practical routing from the stern to many helm or instrument locations.
• ISO spade connectors support interfacing with compatible Raymarine instrument systems.

Compatibility and fit

This transducer is intended for Raymarine instrument systems that accept analog depth, speed, and temperature signals. It is commonly matched with Raymarine i40 Bidata, i50 Tridata, iTC-5, and similar instrument installations, and it is also associated with ST40, ST60+, ST290, and ST70 instrument configurations when the required interface hardware is present.

For ST70 installations, a compatible depth pod or interface may be required. Before ordering, it is worth checking the display head, pod, or converter already on the boat so the wiring and signal type match the existing system.

Installation and setup

The P66 mounts on the transom, so placement matters. It should sit in clean water flow, away from heavy turbulence caused by strakes, steps, through-hull fittings, prop wash, or trailer bunks. On planing hulls, careful height and angle adjustment helps the face stay wet and aligned while the boat is running.

The 30 ft (10 m) cable should be routed with protection from sharp edges, moving gear, and high-current wiring where possible. Leave enough service loop near the stern for tilt, adjustment, and removal, especially on boats that are trailered or stored with the transducer exposed.

Use cases on board

This triducer is a practical match for owners refreshing a Raymarine instrument package, replacing a damaged P66-style transom sensor, or adding combined depth, speed, and temperature data without cutting a new through-hull opening.

It is especially useful on small to mid-size powerboats where the helm display needs basic navigation and water-condition data for coastal cruising, fishing, and day trips.

Maintenance and care

Keep the paddlewheel and sensor face clean so growth, grit, or paint buildup does not interfere with speed and depth readings. The tool-free removal feature makes seasonal cleaning and storage easier, which is helpful for trailered boats and vessels kept in areas with heavy marine growth.

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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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