Attwood Marine Self-Priming Washdown Pump, 4 GPM, 12V, 8.5 PSI

Overview

The Attwood Marine 11574-4 is a self-priming washdown pump for 12-volt DC boats that need a simple way to rinse decks, clean gear, or feed a basic shower setup. It moves up to 4 gallons per minute and develops up to 8.5 psi, which gives it enough output for routine washdown work without adding a more complex pressure-water system.

This pump uses threaded male inlet and outlet connections for standard garden hose attachment, so it is straightforward to tie into common hose runs and quick cleanup jobs around the boat. The housing and impeller are made from corrosion-resistant ABS, which makes sense for wet areas where salt residue, spray, and regular rinse cycles are part of normal use.

It is a practical fit for small to mid-size boats running on 12V power where the goal is deck wash, cockpit cleanup, anchor locker rinse-down, or general freshwater transfer for light-duty onboard use. It should not be run dry.

Key features

• Self-priming 12V DC washdown pump for deck cleaning, general wash use, or basic shower-pump duty
• Flow rate up to 4 GPM with pressure up to 8.5 psi for regular rinse-down tasks on board
• Threaded male inlet and outlet accept standard garden hose connections
• Corrosion-resistant ABS housing and impeller for wet marine environments
• Heavy-duty 8-amp motor sized for 12-volt electrical systems
• Useful where a boat needs simple washdown capability without a full freshwater pressure setup

Installation and setup

This pump makes the most sense on boats with a 12V electrical system and hose runs that already use standard garden hose fittings. That keeps installation simple for owners replacing an older light-duty washdown pump or adding a dedicated rinse pump for deck and gear cleanup.

Because the pump is self-priming, it is easier to position in typical marine service spaces where the water source and discharge point are not on the same level. The output is well suited to rinse salt, sand, mud, fish residue, and dock grime from decks, cockpits, and hardware after a day on the water.

Compatibility and fit

This model is a good match for boaters who want a straightforward washdown pump rather than a high-capacity pressure-water system. It also works where one pump may handle more than one light-duty task, such as cockpit washdown and a simple shower application, as long as the boat uses 12V DC power and standard hose-style plumbing at the pump connections.

For saltwater boats that get frequent rinse-downs, the ABS housing and impeller help the pump stand up to repeated exposure to spray and moisture. Owners looking for a compact cleanup pump with uncomplicated hose connection and moderate output will find this model easier to place in everyday service around the boat.

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.