I bought this for a replacement pump for a dump trailer,I bought a used dump trailer,the pump in it did not work so replaced it with this,it installs very easy and is standard for replacing in dump trailers,I did have to buy a different fitting for the hydraulic hose to connect to on the new pump,wasn't a big deal at all it was standard pipe thread so cost for a elbow was around 6.00 bucks at local hardware store,came wired all I had to do is hook ground and positive battery cables to the pump ,very simple.I end up returning the pump because the trailer I got was junk and it wouldn't lift with much weight in the trailer,I don't believe the issue was the pump I'm pretty certain it was trailer issues,it was originally designed for 1 hydraulic cylinder but someone had switched it out and put 2 on there changing all demographics of the original design of the trailer and that is why it didn't work right for this application,so for and single cylinder trailers this is what u need..David G Hudson,WI
Clint L Norton 
