Attwood Tsunami Mk2 500 GPH Bilge Pump - Model 5606-7 (New in Box)

Product Overview

New in factory-sealed box — this is the Attwood Tsunami Mk2 500 GPH Bilge Pump (Model 5606-7), and it's genuinely one of the best non-automatic bilge pumps on the market. The patented X-Air™ impeller ejects trapped air from the pump and pipework before it can cause an airlock or burnout — the single most common failure point on standard bilge pumps. Universal mounting pattern means it drops right into most existing installations without drilling new holes, and the cartridge swaps out one-handed from tight bilge spaces without touching the plumbing. I picked this up as a liquidation find and it's arriving sealed in its original retail box. If you're outfitting your boat or stocking up on marine gear, you'll find more picks like this in my Outdoor & Sports and Lifestyle, Hobbies & Entertainment collections — and check my New Arrivals for the latest liquidation scores.

Key Features & Specifications

• Brand: Attwood
• Product Line: Tsunami Mk2
• MPN: 5606-7
• UPC / GTIN: 022697023971
• SKU: M4L-Attwood-Tsunami-500GPH
• Flow Rate: 500 GPH (open flow)
• Voltage: 12V DC
• Amperage: 3.5A
• Outlet Size: 3/4" (19mm)
• Wire Leads: 24"
• Key Technology: X-Air™ anti-airlock impeller — ejects trapped air to prevent burnout
• Mounting: Universal pattern — compatible with leading bilge pump brands, no new holes required
• Cartridge Replacement: One-hand swap from tight spaces without disconnecting plumbing
• Protection: 40% better water ingress and electrolysis resistance vs. standard pumps
• Material: ABS plastic / electrical components
• Color: White and Red
• Weight: Approx. 1.6 lbs
• Country of Origin: China (CN)
• Manufacturer: Attwood Marine Products, LLC, Lowell, MI 49331
• Target Age Group: Adult
• Google Product Category: Vehicle Parts & Accessories > Boat Parts & Accessories > Boat Electrical
• HS Code: 8413.70
• Assembly Required: Yes — requires plumbing and 12V DC wiring installation
• ⚠️ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Professional marine installation recommended. Verify compatibility with your vessel before installing.

What's Included

• 1x Attwood Tsunami Mk2 500 GPH Bilge Pump (pump cartridge + base)
• 1x 90° outlet
• 1x 0° outlet
• 1x Non-return washer/valve
• 1x Original retail box

Limited Liquidation Release

This is a 100% brand-new, verified liquidation clearance find. My sourcing allows deep outlet pricing, but quantities are strictly limited — once it's gone, it's gone for good. Some units may arrive without a retail box due to the nature of liquidation sourcing, but no items are ever sold past their Best By or expiration date.

More4less Outlet Promise

• Real Product Photos: Every listing includes at least one actual photo taken by me (Chad) of the exact unit in my Burlington, KY facility. Additional lifestyle imagery is AI-generated for visual context only — the real product photo(s) always show the exact item headed to your door.
• Brand New Condition: Every unit personally verified before shipment.
• Free Shipping via USPS Ground Advantage with tracking.

First Sale Doctrine & Non-Affiliation

This product is resold under the First Sale Doctrine (17 U.S.C. § 109(a)). More4less Outlet is an independent reseller and is not affiliated with, sponsored by, or endorsed by Attwood Marine Products. All trademarks remain the property of their respective owners.