attwood Tsunami Mk2 T1200 12V Manual Bilge Pump 1200 GPH — Compact, X-Air Anti-Airlock (Elbow & Straight Fittings)

The Attwood 5612-7 Tsunami Mk2 T1200 is a compact 12V manual bilge pump delivering up to 1,200 GPH with a patented X-Air impeller to reduce air-locks and keep bilges pumping reliably.

This manual bilge pump pairs rugged construction with installation-friendly features so small boats, tenders, and auxiliary compartments get fast, dependable water removal. Designed as a direct replacement for Attwood 4612-7, the T1200 provides freshwater-proven performance and ships with both elbow and straight fittings to suit multiple mounting orientations.

How does the X-Air impeller prevent air-locks?

The patented X-Air impeller is engineered to maintain flow even when air enters the pump housing, reducing interruptions common with standard impellers. That means fewer stalled cycles and more consistent dewatering in choppy or partially flooded conditions.

• Impeller geometry channels air away from the discharge path
• Sustains prime through intermittent suction
• Improved blade design reduces cavitation

Is installation and maintenance straightforward on tight boats?

T1200 focuses on quick fitment and easy serviceability for cramped bilge spaces. A one-hand cartridge release allows fast access to internal components without removing the entire unit, and the 360° rotatable outlet adapts to different hose runs.

• Supplied elbow and straight fittings for flexible hose routing
• Compact footprint fits restricted bilge wells and under-seat compartments
• Cartridge-style internals remove quickly for cleaning or replacement

What performance can I expect from the 1200 GPH specification?

The T1200 is rated up to 1,200 gallons per hour under ideal conditions, giving strong flow for small to medium-sized craft. Real-world output depends on hose length, lift height, and number of bends, but the robust motor and impeller design keep throughput high compared to similar manual pumps.

• 1200 GPH maximum capacity for rapid bilge clearing
• Best suited for freshwater use and standard bilge applications
• Durable materials designed for routine marine environments

Will this pump replace my existing Attwood 4612-7 directly?

Yes — the 5612-7 Tsunami Mk2 T1200 is engineered as a direct replacement for the Attwood 4612-7, matching mounting and electrical interfaces to simplify swap-outs. When replacing an older unit, verify hose diameter and mounting clearances before installation to ensure compatibility.

• Direct replacement footprint and electrical connection for easy upgrade
• Include both elbow and straight fittings to match prior hose routing
• One-hand cartridge access eases in-place service after installation

Who is this for: The Attwood Tsunami Mk2 T1200 is aimed at boat owners and fleet managers who need a reliable, easy-to-service manual bilge pump for small to mid-size vessels, tenders, and auxiliary compartments. It's particularly useful for freshwater boaters seeking an upgrade from older Attwood models, owners with limited bilge access who value quick cartridge servicing, and anyone wanting flexible outlet orientation for cramped installations. Avoid using it for continuous heavy-duty dewatering beyond its GPH rating; instead, pair it with appropriate electrical or high-capacity pumps for larger requirements.