12V RV Water Pump, 4.0 GPM Self-Priming Diaphragm Pump
$49.99 on Amazon.com (as of June 18, 2026, 12:05 PM EST) View details ↗
Upgrade your RV, boat, or camper with this 12 Volt DC Fresh Water Diaphragm Pump, designed for reliable on-demand water flow. Engineered with a 4.0 GPM capacity and 50 PSI pressure, this self-priming pump delivers consistent performance for irrigation, marine sprinklers, and faucet systems. Its durable diaphragm design ensures long-lasting operation, while thermal overload protection prevents motor burnout, even during dry runs.
Included with the pump are two 1/2" barbed hose adapters and a 50-mesh inlet strainer for easy installation. Note: Avoid exceeding 30 PSI inlet pressure and never adjust the preset pressure screw. For added safety, always secure connections tightly to prevent leaks. Perfect for RVs, boats, and irrigation systems, this pump is built to meet the demands of your water supply needs.







