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  • Replacement pump extends the life of your pressure washer; produces 3300 PSI at 2.4 GPM
  • Maintenance-free crankcase removes the need for oil changes
  • Thermal relief valve protects the pump from overheating
  • Features accessories and parts for easy installation
  • Fits most water gas pressure washers with horizontal engines; 3/4" shaft size
UPC Code:400014312180
Shipping:Usually Ships in 3-5 Business Days
Shipping Weight7 lb.
Length8 1/2 Inches
Width5 Inches
Height7 1/2 Inches
Flow Rate2.4 GPM
Material Silver Anodized Aluminum
Orientation Horizontal
Power Type Gas
PSI3,300 PSI
Shaft Size3/4 Inches
Style Cold Water
Threading Garden Hose Inlet / M22 Outlet
Type Pumps
Unloader Integrated with Easy Start


Designed for superior performance, the Simpson 90028 OEM Technologies horizontal axial cam pump kit provides high efficiency while minimizing engine load. Meant for use with gas pressure washers with a horizontal engine and a 3/4" diameter shaft, like the Kohler SH270 and Honda GS160/90, this pump replacement kit is an easy-to-install and high-performing option. Each kit includes a siphon tube with a filter, mounting bolts, a shaft key, and an instruction booklet to help you get your cleaning operations back on track quickly. The pump can produce up to 3300 PSI at 2.4 GPM and is perfect for washing walls, fences, sidewalks, and vehicles.

The 90028 is both an efficient and long-lasting option for your gas pressure washer. It features stainless steel pistons to ensure longevity of the seal and a stainless steel integrated unloader with an easy-start system. The replacement pump also includes a garden hose inlet and a threaded M22 connection high pressure hose outlet. With this pump, you will never have to worry about changing the oil due to the maintenance-free crankcase. It is manufactured from fully anodized die-cast aluminum to protect against corrosion. A thermal relief valve (TRV) keeps the pump from overheating while in bypass mode by releasing small amounts of hot water and intaking cooler water, extending the life of the pump.

For your convenience, this pump is compatible with a wide variety of gas-powered pressure washers with horizontal engines. Its SAE bolt pattern, hardware, and standard connections will work with many brands and models of power washers. To ensure compatibility, check your pressure washer's inlet and outlet orientations. This unit is backed by a 2 year limited warranty.

Whether you're in need of a replacement part for your pressure washer or are looking for an accessory to enhance your cleaning experience, Simpson has the right part for you! Simpson accessories provide more cleaning options for professionals to get the job done efficiently. For ease of the customer experience, many of Simpson accessories are designed to fit most gas and electric pressure washers.

Overall Dimensions:
Length: 8 1/2"
Width: 5"
Height: 7 1/2"
Shaft Size: 3/4"

Due to manufacturer production variations, check the Compatibility resource to ensure this part is suitable for your application.

Because this item is not stocked in our warehouse, processing, transit times and stock availability will vary. If you need your items by a certain date, please contact us prior to placing your order. Expedited shipping availability may vary. We cannot guarantee that this item can be cancelled off of the order or returned once it is placed.

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