OEM Technologies 90029 Replacement Pressure Washer Pump Kit, 3400 PSI, 2.5 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Residential and Industrial Gas Powered Machines

Easy to install. Fit right on my simoniz 6.5 hp Briggs and Stratton Motor. When I first ran it for a minute it was great. Then lost all power. Shut it down tryed again same thing. Was all ready to return it than I read a review where this guy was running on 1/2 throttle. So I decided to try that. Same thing. But this time I ran it a bit. Working the trigger. Than it started working like it should. Must of been air trapped in it. Customer (manufacturer) service had no idea what was going on with it. Just figured I should put this out their for people who have the same problem that I did.

This pump has the right bolt pattern and shaft size to fit the older model Simoniz with the 6 hp Mitsubishi engine only issue was the out put shaft on the engine was 3/4 or 19 mm to long this was easily solved by cutting off the extra on the shaft it is mild steel not hardened and easily cut with a good grade hacksaw and finished with a good file you may also have to shorten the key.This will not be an issue on the newer models as time went on the manufactures figured out that they could use less material to make the engines. The pump itself has more pressure than the original pump had.

Installed pump quite easily. Powered up pressure washer motor. Newly installed pump does not build up high pressure. Instructions has no trouble shooting procedures. Really disappointed.Went back to get a refund from Amazon - and even more disappointed that message says product is not eligible for return or refund.

pump works great with my SAE measured motor shaft and key. Also this pump came with an extra woodruff key which is a nice touch

Perfect Fit for a Honda GC160 5HP engine. Lots of power. Will see how it will perform over time but so far very happy with the purchase