Attwood Tsunami Mk2 T1200 12V Manual Bilge Pump, 1200 GPH, Direct Replacement for Attwood 4612-7

The Attwood Tsunami Mk2 T1200 is a 12-volt manual bilge pump rated at 1200 GPH, built for efficient, reliable water removal aboard small to mid-size boats. It uses a patented X-Air Impeller design to clear trapped air pockets that would otherwise cause a standard impeller to lose prime, keeping the pump moving water even when air gets drawn into the intake alongside bilge water.

The pump ships with both a 360 degree rotatable elbow outlet and a straight outlet, so it can be installed in tight or awkward bilge compartments without forcing the discharge hose into an unworkable angle. A one-hand cartridge release lets the impeller cartridge be pulled and serviced quickly, without tools, which matters when the pump is mounted in a cramped bilge space and needs a fast field cleaning or impeller swap. The housing and impeller are made of durable plastic, and the unit is designed for freshwater use.

This unit is a direct replacement for the earlier Attwood 4612-7 12V T1200 pump, so boat owners upgrading or replacing a worn unit can install the 5612-7 in the same mounting location without changing the plumbing configuration. The pump includes the mounting washer and a non-return valve (NRV) to prevent backflow through the discharge line once the pump shuts off.

Specifications

• Brand: Attwood
• Manufacturer Part Number: 5612-7
• Product Style: T1200 - 12V, 1200 GPH
• Voltage: 12 Volts (DC)
• Power Source: DC
• Maximum Flow Rate: 20 Gallons Per Minute
• Maximum Lifting Height: 14 Feet
• Product Dimensions: 4 inches L x 6.6 inches W x 4.4 inches H
• Weight: 1.2 pounds
• Material: Plastic
• Color: White/Gray
• Outlet Design: 360 degree rotatable elbow outlet, with straight outlet included
• Included Components: Unit, Instructions, Washer, NRV (Non-Return Valve), 90 Degree Outlet, Straight Outlet
• UPC: 022697024152

Fitment

This is a manual 12-volt bilge pump intended for general marine bilge installation; no make/model/year fitment is specified beyond its use as a direct replacement for the Attwood 4612-7 12V T1200 pump.

Replaces (OEM)

• Attwood 4612-7

Frequently Asked Questions

What is the Attwood 5612-7 bilge pump rated for? The Attwood 5612-7 Tsunami Mk2 is a 12-volt manual bilge pump rated at 1200 GPH (T1200), with a maximum flow rate of 20 gallons per minute and a maximum lifting height of 14 feet.

Is the 5612-7 a direct replacement for another Attwood pump? Yes, the 5612-7 is a direct replacement for the Attwood 4612-7 12V T1200 pump, so it installs in the same location without changing existing plumbing.

Does the pump come with the fittings needed to install it? Yes, the 5612-7 ships with both a 90 degree elbow outlet and a straight outlet, along with the mounting washer and a non-return valve (NRV), so both outlet configurations are covered out of the box.

What are the dimensions of this bilge pump? The Attwood Tsunami Mk2 T1200 (5612-7) measures 4 inches long by 6.6 inches wide by 4.4 inches high.

How much does the 5612-7 weigh? The Attwood 5612-7 bilge pump weighs 1.2 pounds.

What voltage does this pump run on? This is a 12-volt DC bilge pump, drawing power from a standard 12V marine electrical system.

What is the X-Air Impeller feature on this pump? The X-Air Impeller is a patented impeller design in the Attwood Tsunami Mk2 T1200 that clears trapped air pockets so the pump keeps moving water instead of losing prime when air enters the intake.

Can the outlet be rotated after installation? Yes, the elbow outlet on the 5612-7 rotates a full 360 degrees, allowing the discharge hose to be aimed in whatever direction fits the mounting location; a straight outlet is also included as an alternative.

Is this pump serviceable in a tight bilge space? The Attwood 5612-7 features a one-hand cartridge release, letting the impeller cartridge be removed for cleaning or replacement quickly without tools, even in a cramped bilge compartment.

What material is the pump housing made of? The Attwood Tsunami Mk2 T1200 (5612-7) is constructed of durable plastic in a white and gray color.

What is included in the box with the 5612-7? The package includes the pump unit, instructions, a mounting washer, a non-return valve (NRV), a 90 degree outlet, and a straight outlet.

Is the Attwood 5612-7 genuine Attwood equipment? Yes, the 5612-7 is a genuine Attwood part, manufactured by Attwood under the Tsunami Mk2 T1200 product line.