Attwood 56137 Tsunami T1200 Mk2 Cartridge Bilge Pump, 24V
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Attwood 56137 Tsunami T1200 Mk2 Cartridge Bilge Pump (24V) is a high-output cartridge bilge pump designed for easier servicing and dependable bilge water removal. Built around Attwood’s single-handed cartridge service concept and an X-Air™ impeller to help prevent air locking, it’s a strong choice for installations where fast maintenance matters.
Key Features
- Patented X-Air™ Impeller helps prevent air locking so the pump can continue to move water and reduce the risk of dry-running
- Flexible outlet design with a 90° rotatable elbow outlet for flexible routing and full 360° orientation
- Single-hand pump cartridge release for convenient access in hard-to-reach hull locations
- Exterior mounting feet help simplify installation and reduce the need to remove the basket
- Designed for cartridge replacement without removing pipe or hose
- Motor and shaft seals engineered for improved protection against harmful corrosion
- Tricuspid check valve helps prevent backflow through the pump
- T1200 performance: GPH ratings are provided for operation with and without the check valve at 13.6V
Product Compatibility
- Marine bilge pumping systems
- 24V DC livewell and wet-bilge style installations where a cartridge bilge pump design is desired
- Boat plumbing applications requiring serviceable bilge pump cartridges
Product Details
- Attwood Tsunami T1200 Mk2 cartridge bilge pump (24V)
- Model/SKU shown: 23-56137
- Cartridge-style bilge pump design for serviceability
- Check valve included in this configuration (tricuspid check valve)
- Performance statement included: GPH ratings with and without the check valve at 13.6V
Parts Desk Insights
Best Use Case: Best suited for boats that need dependable high-flow bilge pumping with easier, faster servicing access—especially when the pump location makes full disassembly difficult.
Common Issues: If pump performance seems reduced after service, re-check that the outlet routing is correct for the installation angle and confirm the cartridge is properly seated/locked before cycling power. Also inspect for corrosion at electrical connections and mating surfaces, since corrosion can contribute to poor operation over time.
Related Products & Accessories
- Browse Bilge Pump Switches - Pairing a bilge pump with an appropriate switch/control is often required for automatic operation.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.