FIMCO 5151088 High Flo 12Volt Demand Diaphragm Pump (Upgrade), 4.5GPM, 60PSI, Can Use with Roundup

I bought this pump to replace one that froze over the winter, and I’m beyond impressed with how well it works! The internally fan-cooled motor is a powerhouse, delivering consistent performance even under heavy load. I’ve been using it for demanding tasks, and it hasn’t skipped a beat, proving its reliability and durability. The chemically resistant elastomers really boost the flow rate, making this pump noticeably more efficient than my old one. The built-in check valves are a great feature, maintaining steady pressure and preventing backflow, which gives me peace of mind during operation. It’s also self-priming, and the fact that it can run dry without damage is a huge plus for reliability, especially in unpredictable conditions. This pump is a direct replacement for several part numbers (5281372, 5275088, 5277982, 5275704, 5275498, 5274983, 5275017), and it fit my system perfectly with no installation hassles. The performance has been flawless, and it’s clear this pump is built to last. My only minor wish is that it came with more detailed installation instructions for first-timers, but since I was replacing an existing pump, it wasn’t an issue for me. If you need a robust, high-performing replacement pump, this one is an absolute winner. It’s been a game-changer for my setup!

Works great for my sprayer. Fit perfectly and isn't very loud.

great pumps

Works as it should. Good quality.

Works as it should and has gone through a whole season being fed by a 40 gallon tank with zero issues. Pressure is good and price was okay.

My pumps usually last A couple of seasons, I keep my old pumps for parts and sometimes I can limp them along a little longer. I think like everything else they get built cheaper overtime but overall, I’m pretty happy.

Bought this pump ran for 20 seconds then it just quit! No power no pressure! Checked all the connections even verified with a 12volt test light that it had power and it did and CAN'T RETURN IT! what a joke!!! UPDATE: I couldn't return it so I had nothing to lose I tore the pump apart thinking it has to be a freak issue because Fimco builds good stuff come to find out the pressure switch was stuck the pump builds to 60psi and shuts off when this happened it stuck I was able to get it reset and haven't had an issue with it since

For context, I replaced a 2.1 gpm pump on a 20 gallon atv style sprayer. Typical sprayer with 2 nozzles and a wand. It works soooo much better with this pump. You can still regulate the pressure with the tank return, but you can keep pressure up when spraying the wand on full stream. Really happy. Don't have many hours on it to be able to speak to durability, but I'd buy again.