Johnson 1250GPH Ultima Bilge Pump 12v
Choose the 12v 1250GPH Ultima Bilge Pump 12v for a marine bilge installation that matches its hose size, capacity and electrical requirements. Product 184086 uses a 1 1/8” and 1 1/4” connection; the detailed flow figures below let you compare the pump at the stated test conditions.
Flow reduces as pumping head increases. Compare the zero-head figure with the rated output at the listed lift rather than treating the model name as the delivered flow at every installation. The test voltage is also relevant when comparing pump capacities.
The integrated electronic float switch provides automatic operation in one compact assembly. Its housing dimensions help you assess mounting room and service access.
Check the 12v supply, specified fuse and current draw together when selecting the electrical arrangement. Match the discharge hose to the 1 1/8” and 1 1/4” connection and leave room to service the pump after it is fitted.
For comparison, capacity Zero Head (13.6v): 79Lpm - 1250GPH, while capacity at 1.0m Head (13.6v): 51Lpm - 800GPH. These two operating points show why the hose route and lift need to be considered with the capacity. Use the rated point relevant to the installation when narrowing the pump choice.
Choosing and using this product
Compare the package contents with the complete installation you are planning. Pump-only listings and kits can differ in switches, fittings and hoses. Listing the required components before ordering helps you select the appropriate package and avoids treating an illustrated accessory as an included part.
For this version, connection: 1 1/8” and 1 1/4”. Use that specific detail when comparing the item with your existing equipment or planned installation. Other sizes and configurations in the range should be checked separately rather than treated as equivalent.
Product details
- Dimensions: 142mm long x 82mm wide x 117mm high
- Capacity at 1.0m Head (13.6v): 51Lpm - 800GPH
- Capacity Zero Head (13.6v): 79Lpm - 1250GPH
- Amperage: 3A
- Fuse Size: 5A
- Connection: 1 1/8” and 1 1/4”
- Voltage: 12 V DC
- Operation: automatic electronic float switch
- Product code: 184086