Attwood Tsunami MK2 T500 Manual Bilge Pump w/Installation Kit - 500 GPH & 12V

Experience dependable bilge pumping with the Attwood Tsunami Mk2 T500 Manual Bilge Pump with Installation Kit. This complete kit delivers a 500 GPH manual pumping solution designed for freshwater and marine use, with a robust 3/4" I.D. hose outlet and a full set of installation components. The Tsunami Mk2 is engineered to eliminate airlocks thanks to the patented X-Air™ Impeller, ensuring quick, reliable discharge even when air is trapped in the pump or piping.

Why choose the Tsunami Mk2 T500?

• Airlock elimination — Patented X-Air™ Impeller ejects trapped air from the pump and piping for uninterrupted pumping.
• Reliable 500 GPH performance — Budget-friendly, high-capacity manual bilge pumping for everyday boating needs.
• Integrated 12V kit — Ready-to-install with a 2‑way on/off switch, bezel plate, wiring, and easy-to-use components.
• 360° installation flexibility — 90° rotatable elbow outlet and full 360° orientation for versatile mounting locations.
• Durable construction — Improved protection against water ingress and electrolysis (40% better than Mk1).
• Backward compatibility — Uses the same hole pattern and motor cartridge as Tsunami Mk1 for easy upgrades.
• Complete installation kit — Includes pump, washer/non-return valve, outlets, hose (3/4" x 5'), through-hull fitting, hose clamps, wire kit, and installation kit for quick setup.
• Ease of service — Service pump cartridges from hard-to-reach areas with one-hand operation.

What’s in the kit

• Attwood Tsunami Mk2 500 GPH Pump
• Washer / Non-Return Valve
• 90-degree Outlet
• Straight Outlet
• 3/4" x 5' Pump Hose
• 3/4" Through-Hull Fitting
• 2-Way On/Off Switch with Bezel Plate
• Snap-It Hose Clamps
• Wire Kit
• Installation Kit

Specifications

• GPH: 500
• Rated Volts DC: 12V
• Fuse Size: 3 Amp
• Hose Diameter: 3/4" and 1"
• Wire Length: 29" (735 mm)
• Hose Outlet: 3/4" I.D. (with 5' hose) and 1" option
• 90° Rotatable Outlet for flexible installation
• External mounting feet and integrated outlets to simplify mounting
• Backward compatible with Tsunami Mk1 hole pattern and motor cartridges

Caution: Bilge pump switches are not external ignition protected.