For 500 GPH, 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 are delivered including both a straight and a 90 degree 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 Johnson Pump bilge control panel.
CE-Approved 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
• Capacity 3 ft (0.9 m) head (13.6 V): 33 l/min - 525 GPH
• Capacity Straight: 40 l/min - 630 GPH
• Amerpage: 2.5A
• Fuse Size: 5 A
• Connection: 3/4"
• Max Height: 112 mm - 4.4"
• Weight: 0.27 kg - 9.6 oz.