This is a Shurflo 2088-554-144 Fresh Water Pump (12V, 3.5 GPM).

The customer said they used it once and then returned it to me. It looks brand new, but I have not tested the pump since I got it back. Please review the photos for the exact condition. Selling as-is.

Product details (for reference):

Model: 2088-554-144

12V DC, up to 3.5 gallons per minute

Self-priming up to 9 ft

Built-in 45 PSI pressure switch

Can run dry without damage

Durable design, great for RVs, campers, boats, and portable water systems