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Johnson Ultima Combo Cartridge Automatic Heavy Duty Bilge Pumps ; Models L450 UC, L550 UC, L650 UC, L750 UC 12/24V DC

These pump series consists of four different sizes. The basic version can be combined with either an automatic switch AS888, an electronic float switch or the new ULTIMA switch for automatic operation. The Cartridge Duo pumps are equipped with a non-clogging electronic float switch as standard.

For L450, L550, and L650 and dito Ultima Combo versions, we have improved the design with easy-to-install Dura-Port discharge ports to eliminate stress cracking caused by over-tightened hose clamps.

The pumps will be delivered including both a straight and a 90° smooth elbow Dura-Port as well as a removable check valve.

Both the Cartridge and the Ultima Combo pumps may be manually operated via the bilge control panel.

Key Features

  • Compact, all-in-one motor/impeller unit
  • No tools needed for maintenance
  • Extremely energy efficient
  • Water-cooled motor for long service intervals
  • Meets the international standard, ISO 8849 marine

Dimensions & Techy Bits

  • See Images


  • L450 UC 12v
  • L550 UC 12v
  • L650 UC 12v
  • L750 UC 12v
  • L750 UC 24v

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