Pressure Washered

Simpson AAA Horizontal Triplex Pressure Washer Pump Review

Editor's Choice

Simpson AAA Horizontal Plunger Pump Kit

Effortless cleaning with built-in easy-start system
9/10
EXPERT SCORE
This replacement pump kit delivers high pressure up to 3700 PSI for tough cleaning tasks, combining durability and efficiency with easy installation.
Updated: July 23, 2026 12:41 pm

Simpson AAA Horizontal Triplex Pressure Washer Pump Review

Introduction

The Simpson AAA Horizontal Triplex Pressure Washer Pump, model 90065, is a high-performance replacement pump designed for pressure washers. Manufactured by Simpson, a reputable name in the outdoor power equipment industry, this pump is specifically tailored for users looking for reliability and efficiency in tough cleaning tasks. Intended for both residential and commercial use, the AAA Horizontal Triplex Pump offers an impressive balance of power and versatility, making it suitable for a range of applications from paint removal to heavy grime cleaning.

Product Overview

The Simpson AAA pump features a sleek black aesthetic, characterized by its robust construction. Built with a brass pump head, this design not only enhances durability but also resists corrosion and wear, ensuring longevity even under demanding conditions. The polished ceramic-coated pistons further contribute to its efficiency, while dual oversized ball bearings facilitate smoother operation by reducing friction. A notable design element is the built-in EZ Start system, which simplifies the starting process, making it user-friendly, even for newcomers to pressure washing.

Key Features and Specifications

  • Max Pressure: 3700 PSI burst pressure
  • Flow Rate: 2.5 GPM
  • Construction: Brass pump head, ceramic-coated pistons
  • Installation: Fully plumbed with all necessary hoses and fittings
  • Compatible: Fits most horizontal 3/4 inch shaft engines
  • Part Number: 90065
  • Color: Black
  • Price: $299.99
See also  KSQOON TS1511 Pressure Washer Triplex Pump Review

Experience Using the Product

Using the Simpson AAA Horizontal Triplex Pump in various scenarios has been a positive experience. During a recent home exterior cleaning project, the pump efficiently tackled tough stains and grime, demonstrating its power with a strong 3700 PSI. The 2.5 GPM flow rate struck a great balance, allowing for effective cleaning without excessive water usage. The built-in EZ Start system worked flawlessly, ensuring that I could get the machine up and running with minimal effort.

In another instance, I used the pump for graffiti removal on a concrete wall. It was impressive how quickly it broke down the paint, showcasing the pump’s high-pressure capabilities. The adjustable pressure settings allowed me to fine-tune the output based on the task, which was particularly useful for more delicate surfaces.

Pros and Cons

Pros

  • High maximum pressure and flow rate for effective cleaning
  • Durable construction with corrosion-resistant materials
  • User-friendly design with the EZ Start system
  • Quick installation with compatible fittings
  • Versatile for a wide range of applications

Cons

  • Price point may be higher compared to some entry-level models
  • Compatibility verification required before purchase

Conclusion

Overall, the Simpson AAA Horizontal Triplex Pressure Washer Pump is a robust and reliable option for anyone seeking an upgrade or replacement for their pressure washer. With its powerful performance, durable construction, and user-friendly features, this pump can handle a variety of tough cleaning tasks with ease. While the price may be a consideration for some, the quality and effectiveness of the pump justify the investment. For those serious about pressure washing, this product is certainly worth considering.

Ray D Berryman
Ray D Berryman

Ray D. Berryman spent most of his working life selling, servicing, and repairing pressure washers and outdoor cleaning equipment. Over the years, he helped homeowners and contractors choose the right machines, solve common problems, and keep their equipment running properly. Now retired, Ray shares practical advice based on real hands-on experience rather than product brochures.

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