Attwood Marine Tsunami MK2 Manual Bilge Pump, X-Air Impeller, 90° Rotatable Outlet

Overview

The Attwood Marine Tsunami MK2 is a manual bilge pump range for boats that need switched bilge water removal in 12V or 24V systems. The range covers 500, 800 and 1200 GPH ratings, with retail models using a 29 inch (735 mm) wire lead, IP68 protection and the patented X-Air impeller to clear trapped air from the pump and pipework.

This pump is a good fit for bilge compartments where access is limited and a serviceable cartridge pump makes upkeep easier. The 90 degree rotatable elbow outlet allows the discharge hose to be routed in a full 360 degree orientation, while the external mounting feet help with installation because the basket does not have to be removed just to fasten the pump in place.

Key features

• Patented X-Air impeller ejects trapped air in the pump and discharge line, helping prevent air-locks after the bilge has run low or the hose has held air.

• Configuration range covers 500, 800 and 1200 GPH flow ratings across 12V and 24V DC boat electrical systems.

• IP68-rated construction with PC/BT, ABS, glass-filled polypropylene, POM, PBT, an SS316 motor shaft and nitrile seals used in the pump assembly.

• 90 degree rotatable elbow outlet supports hose routing around stringers, limber holes and other tight bilge geometry.

• External mounting feet and a one-hand cartridge release make service more practical in low bilge areas.

• Meets or exceeds ABYC H-22, ISO 8849 and ISO 15083 bilge pump standards, with ISO 8846 ignition protection and ABYC E-11 and ISO 10133 wiring standards listed for the range.

• Backward-compatible mounting hole pattern and motor cartridges support Tsunami Mk1 bilge and aerator pump retrofit work.

Variants

This range is offered in five pump configurations. The main differences are rated flow and system voltage, which affect bilge water movement and the circuit sizing needed at the helm or DC distribution panel.

The 500 and 800 GPH models use 3/4 inch (19 mm) and 1 inch (25 mm) barbed outlet options, while the 1200 GPH models use 1 inch (25 mm) and 1-1/8 inch (28 mm) barbed outlet options. The retail configurations listed here share the X-Air anti-airlock impeller, 29 inch wire lead and IP68 rating.

• 5606-7: 500 GPH, 12V. This T500 configuration uses a 3 Amp fuse and works well for smaller bilge spaces where a lower-flow 12V pump matches compact hose runs.

• 5608-7: 800 GPH, 12V. This T800 configuration uses a 4 Amp fuse and gives 12V boats a step up in capacity while retaining the 3/4 inch and 1 inch outlet size family.

• 5612-7: 1200 GPH, 12V. This T1200 configuration uses a 5 Amp fuse and belongs in larger 12V bilge areas where more pumping capacity is needed.

• 5609-7: 800 GPH, 24V. This T800 configuration uses a 2 Amp fuse and fits vessels with a 24V DC bilge circuit.

• 5613-7: 1200 GPH, 24V. This T1200 configuration uses a 2 Amp fuse and pairs the higher 1200 GPH rating with 24V system compatibility.

Installation and service

Plan the installation around the bilge low point, discharge hose diameter and access to the cartridge release. A non-return valve is recommended for any installation, and the correct outlet type should be matched to the hose size so the bilge line is not forced into a poor bend or an undersized connection.

The rotatable outlet is useful when the pump has to sit near a stringer, bulkhead or hull shape that limits hose direction. The external feet also make the pump friendlier for production installs and refits because the base can be secured without taking the basket apart.

Electrical and system fit

Match the voltage and fuse size to the vessel's DC system before installation. The 12V versions use 3 Amp, 4 Amp or 5 Amp fuse ratings depending on output, while the 24V versions listed here use a 2 Amp fuse rating. Use marine wiring practice, secure the lead away from standing water where possible and make service loops that do not pull on the cartridge.

Use cases on board

The 500 GPH version fits small craft and auxiliary bilge zones where space and current draw matter. The 800 and 1200 GPH versions fit larger compartments, fishing boats, runabouts and cruising boats where faster bilge clearing is needed from a manually controlled pump circuit.

Maintenance and care

Keep the basket area clear of leaves, hair, bait debris and bilge sludge so the impeller can move water freely. During seasonal service, check that the cartridge releases cleanly, the outlet remains secure, and the discharge line has not sagged in a way that traps excess water. On saltwater boats, a freshwater rinse around the pump area and periodic inspection of wiring and connectors help control corrosion in the bilge space.

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.

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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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