Your cart is empty.
Your cart is empty.Engineered to surpass expectations, the 90037 AAA Professional Triplex Pump is highly efficient and minimizes engine load while delivering top performance. This easy-to-install pump replacement kit is for gas pressure washers* with a horizontal engine and a 3/4" diameter shaft, such as the Honda GX200. This pump can produce up to 3700 PSI at 2.5 GPM. The 90037 is designed with dual oversized ball bearings to reduce friction and allow for long lasting performance in the toughest cleaning environments. The 90037 features a stainless steel integrated unloader featuring our easy-start system. (*Check your pressure washer's inlet and outlet orientation to ensure compatibility)
Kyle
2025-08-08 16:36:42
Replaced pump on a Honda engine power washer. Working great. Very easy to install once you get the old pump off.
Jw raabe
2025-07-14 12:37:22
This pressure washer pump works perfectly on my pressure washer I went from 3000 PSI to 4000 PSI I would buy from them again if ever I need to I know of three people that have already bought the same pump for their pressure washers and they love it also
Customer
2025-07-11 14:01:19
Got my simpson pressure washer up and running. Does not come with pressure washer pump oil. So make sure you get some of that as well. Also there is a small bag with mounting bolts and a new shaft key in the box that I didnt immediatly see as it was under some packing material. So make sure you dig that out before you throw the box away.
Tim
2025-06-07 16:10:42
Warranty is a lie, Simpson makes it impossible to get pump fixed. Absolutely garbage product lasted for maybe 30hrs before pump internals imploded. My original exact pump as this one, lasted 7 years of commercial use. Probably 1200 hrs. Off sight service centers for warranty repair. I bought a replacement pump not a pressure washer. Took pump to repair facility who calls 3 weeks later to tell me to bring my entire unit down so they can test it or Simpson won't cover it. I've driven 120 miles so far to service centers for repair work to fix a $250 pump. Not only will I never buy another Simpson pump, I will tell everyone I know to never buy their garbage products ever. Buyer beware, it will fail and Simpson won't honor their 5 yr warranty.
Brad
2025-05-29 12:10:47
Quick shipping, easy to install & worked perfectly with no problems at all. I did see reviews of pumps leaking & I'm guessing that some people must have had other issues because mine did not leak at all. Only had one use of about 4 hours & the pump worked flawless. The mounting part of the pump does seem to be a different type on metal like a harden aluminum but no problem just do not over tighten the bolts. Good solid replacement!
Customer
2025-05-25 11:36:30
I bought few years ago and still works fine forme
Customer
2025-04-23 13:15:50
For my pressure washer perfect. Quick 20 minutes job. It comes pre filled with pump oil. Just don't forget to remove the red tab on the oil cap... And yes a very small amount of oil may come out of the tiny hole in the cap. It to allow the oil vent if needed.
Zygie Wasik
2025-03-30 18:31:55
Mount to a Honda motor. Took about 15 minutes to do.
Customer
2025-03-03 18:55:07
Everything was perfect
Tim H
2024-12-29 11:33:30
Undid the 4 bolts, slid off old pump, slid on this pump, tightened bolts and tested. Worked perfectly right off the bat !
WLZ
2024-12-08 10:23:36
Worked as advertised.
Recommended Products
$84.99
$ 40 .99 $40.99