The Rule 3800 GPH 12V general purpose centrifugal pump moves high volumes of water on standard 12-volt boats. Centrifugal pumps favor flow over pressure, which suits dewatering, circulation, washdown supply, and livewell circulation. It is the 12V counterpart to Rule’s 3700 GPH 24V model.
This pump is not self-priming, so it must be mounted below the waterline with a flooded inlet. Rule builds it with a compact, corrosion-resistant housing and a marine motor. Correct plumbing size and an unrestricted water supply keep it near its rated flow.
Confirm the electrical supply, circuit protection, and plumbing before installing, and do not expect it to pull water up from above. Test the system for leaks and steady flow before regular use. Browse more Bilge Pumps for other high-capacity pumps.
Key Features
- 12V, 3800 GPH
- Centrifugal design for high flow
- Must be mounted below the waterline
- Corrosion-resistant housing








