Ultima Combo - Automatic Submersible Bilge Pump

Johnson Pump Marine Ultima Combo bilge pumps are JPM's proven Cartridge Bilge Pumps combined with the non-clogging electronic switch Ultima Switch for automatic operation. The electronic automatic switch Ultima Switch uses the patented Mirus field effect detector cells producing micro-electrical fields that detect disruptions caused by level of water present in the bilge and automatically activates and deactivates the pump.

Overview

The Ultima Combo pump is a compact, high-performance bilge solution pre-configured with an electronic Ultima Switch for automatic operation. Designed for long service life and easy maintenance, it’s ideal for marine environments where reliability and efficiency matter most.

Key Features

Limited 3 Year Warranty
Pre-configured with an electronic Ultima Switch for automatic operation
Capacities: 500 GPH, 750 GPH, 1000 GPH, and 1250 GPH
Extremely energy efficient
Water-cooled motor for long service intervals
Compact, all-in-one motor/impeller unit with stainless steel (SS2343) shaft
No tools needed for maintenance; pump casing remains attached to boat and hoses

Model-Specific Details

500 GPH, 750 GPH, and 1000 GPH models:
- Easy-to-install Dura-Port discharge ports prevent stress cracking
- Includes both straight and 90° smooth elbow Dura-Port fittings
- Removable check valve included

Compliance

Meets ISO 8849 marine standard

Material Specifications

Pump body:	Thermoplastic
Shaft seal:	Lip seal
Shaft:	Stainless steel (SS2343)

Technical Data

Part No.	Part No.	Description	Capacity 3 ft (0.9 m) head (13.6V/27.2)	Capacity straight (13.6V/27.2V)	Voltage	Amperage	Fuse Size	Connection	Wire size
32-1450UC-01	07503-00	Ultima Combo 500 GPH 12V	33 l/min - 525 GPH	40 l/min - 630 GPH	12 V	2.5 A	5 A	¾"	16 GA (1.3mm²)
32-1550UC-01	07703-00	Ultima Combo 750 GPH 12V	44 l/min - 700 GPH	50 l/min - 800 GPH	12 V	3 A	5 A	¾"
32-1650UC-01	07903-00	Ultima Combo 1000 GPH 12V	50 l/min - 800 GPH	63 l/min - 1000 GPH	12 V	3.2 A	5 A	¾"
32-1650UC-01-24	07904-24VRCE	Ultima Combo 1000 GPH 24V	50 l/min - 800 GPH	63 l/min - 1000 GPH	24 V	2 A	3 A	¾"
32-1750UC-01*	08203-00*	Ultima Combo 1250 GPH 12V	60 l/min - 952 GPH	73 l/min - 1150 GPH	12 V	3 A	5 A	1⅛"
32-1750UC-01-24*	08203-24*	Ultima Combo 1250 GPH 24V	60 l/min - 952 GPH	73 l/min - 1150 GPH	24 V	2 A	3 A	1⅛"
* Does not include Dura-Port connection

Height (A)	4.41" (112 mm)
Width (B)	4.25" (108 mm)
Width (C)	3.35" (85 mm)
Weight	0.40 kg – 14.4 oz. 500 GPH – 1000 GPH
Weight	0.45 kg – 16 oz. 1250 GPH