Other Available Types:

  • Designed for use with pressure washers rated up to 4000 PSI, 3.5 GPM
  • Power Boost technology produces higher pressure at the nozzle
  • Prevents overheating with thermal relief protection
  • Fully plumbed
  • Designed to fit most makes and models of gas pressure washers with horizontal engines
UPC Code: 879399002090
Shipping: Usually Ships in 3-5 Business Days

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Simpson 90039 Specs
Flow Rate 3.5 GPM
Manifold Brass
PSI 4,000 PSI
Shaft Size 1 Inches
Threading Garden Hose Inlet / QC Outlet
Type Pumps
Unloader Integrated & Adjustable with Easy Start

Simpson 90039 Details

Designed for superior performance, this Simpson 90039 AAA C42 Triplex horizontal pump is designed to fit most makes and models of gas pressure washers with horizontal engines and a 1" shaft size. This Triplex horizontal pump is efficient while minimizing the strain on the engine of your pressure washer. It contains dual oversized radial ball bearings and polished stainless steel pistons for an extended lifetime under heavy use, and Power Boost technology produces higher pressure at the nozzle. It also features an adjustable unloader, an easy-start system, and thermal relief protection to prevent pump overheating. Plus, with an integrated sight glass and oil seal technology, there's no need for a dipstick to check oil levels. It comes fully plumbed with a fully sealed, anodized, die-cast aluminum crankcase that resists corrosion and prevents contamination. It is rated for use with 4000 PSI; 3.5 GPM pressure washers.

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.

Resources and Downloads for
Simpson 90039

Specs Specsheet Simpson90038,39TriplexPumpKit Manual Manual Simpson Pumps Sell Sheet Compatibility

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