Customer Reviews

12 Volt 3.8 G.P.M. Pump

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This 3.8gpm pump has the highest volume of the three pumps as it uses a larger chamber and pistons to do the work:
1.0gpm=35psi@4amps, 2.1gpm=60psi@8amps, 3.8gpm=45psi@11amps.
The 1.0 is OK for general bug spraying, but when you have to lay down something like liquid fertilizer, I would go with the 2.1 or the 3.8.
Addendum:
Just received the wrong part; they sent a 1.0gpm pump (which I already have). Contacted the seller (not the one selling the part now) and they got a hold of Fimco and Fimco nicely sent me the correct part and was told to keep the 1.0 they sent as a freebie (not bad).

I hooked up the 3.8 in place of the 1.0 and was not that impressed with the performance of the pump.
It does not work as hard as the 1.0 (which is a good thing), and from what I could tell puts out 30% to 50% more fluid, but not what you would expect going from a 1.0gpm to almost 4 times that to the 3.8gpm pump.

I was a bit worried about the 11amp draw compared to the 4amp draw of the 1.0, but it seems to work fine off of a lawn tractor battery.

All in all, if I was to do it all over again, I would probably go for the 2.1gpm at a lower cost, but enough is enough.