Johnson Pump 1250 GPH Ultima Combo Pump 1-1/8" Hose 12V

Ensure optimal safety and performance on your vessel with the Ultima Combo Automatic Submersible Bilge Pump. Offering up to 1250 GPH, this high-capacity bilge pump is engineered for marine applications, providing reliable and efficient water removal with automatic operation through the advanced Ultima Switch™ technology. Its robust construction and energy-efficient design make it an essential addition to any boating setup.

Product Features

• Automatically operates with Ultima Switch™ electronic system for seamless bilge management
• Available in multiple capacities: 500 GPH, 750 GPH, 1000 GPH, and 1250 GPH to suit various vessel sizes
• Highly energy-efficient to minimize power consumption
• Water-cooled motor ensures long service intervals and durability
• Compact, all-in-one motor and impeller unit featuring a stainless steel (SS2343) shaft for increased longevity
• Tool-free maintenance: pump casing remains attached to the boat and hoses, eliminating the need for complete disassembly
• Dura-Port discharge ports (available on 500 GPH, 750 GPH, and 1000 GPH models) prevent stress cracking from over-tightened hose clamps
• Includes both straight and 90° smooth elbow Dura-Port fittings, along with a removable check valve (for 500, 750, and 1000 GPH models)
• Complies with ISO 8849 international marine standards for quality and reliability
• Constructed with a durable thermoplastic pump body, lip seal shaft seal, and stainless steel shaft to withstand harsh marine environments
• Operates on 12V systems, making it compatible with most marine electrical setups
• Minimal wiring requirements using 16GA wire size
• Standardized hose size of 1-1/8" for easy installation and compatibility
• CE-Approved for compliance with safety and performance regulations

Technical Specifications

Feature	Details
Capacity	1250 GPH
Operation	Automatic
Outlet Size	1-1/8"
Voltage	12V
Type	Electric
Head Capacity (3ft, 0.9 m) at 13.6V/27.2V	60 l/min - 952 GPH
Straight Capacity at 13.6V/27.2V	73 l/min - 1150 GPH
Amperage	3 A
Fuse Size	5 A
Connection	1-1/8"
Dimensions	4.41" (L) x 4.25" (W) x 3.35" (H)
Weight	16 oz. / 1.1 lbs
Box Dimensions	4"H x 7"W x 8"L
UPC	729321082037

Additional Resources

Owner's Manual (PDF)

Product Demonstration Videos

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.