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Simpson AAA Triplex Plunger Pump Kit 2.5 GPM Review

Editor's Choice

Simpson AAA Horizontal Plunger Pump Kit

Powerful 3700 PSI for tough cleaning jobs
9/10
EXPERT SCORE
Upgrade your pressure washer with the Simpson AAA Plunger Pump Kit, designed for high pressure and exceptional durability. Perfect for tackling tough cleaning tasks with ease and efficiency.
Updated: July 23, 2026 12:40 pm

Simpson AAA Triplex Plunger Pump Kit 2.5 GPM Review

Introduction

The Simpson AAA Triplex Plunger Pump Kit is a powerful addition to any pressure washing setup, crafted by the reputable manufacturer Simpson. This horizontal plunger pump kit is engineered for high pressure cleaning tasks, making it ideal for both residential and light commercial use. With a maximum pressure rating of 3700 PSI and a flow rate of 2.5 gallons per minute (GPM), it’s tailored for tackling tough cleaning jobs, including paint removal, graffiti cleaning, and heavy dirt removal.

Product Overview

Visually, the Simpson AAA Triplex Plunger Pump exudes a sturdy and professional aesthetic. Its design features a sleek black finish, accented by a brass pump head that not only enhances its durability but also gives it a polished look. The use of quality materials such as polished ceramic-coated pistons and dual oversized ball bearings suggests that this pump is built to last. Unique design elements like the vented oil crankcase and ergonomic control handle further highlight its user-friendly approach.

Key Features and Specifications

  • Part Number: 7106573
  • Model: 7106573
  • Maximum Pressure: 3700 PSI
  • Flow Rate: 2.5 GPM
  • Hollow Shaft: 3/4 inch for compatibility with most engines
  • Material: Brass pump head, polished ceramic-coated pistons
  • Weight: Lightweight for easy handling
  • Easy Installation: Fully plumbed with necessary hoses and fittings
  • Built-In Easy-Start System: For effortless starting
See also  Hourleey 4400PSI Pressure Washer Pump Kit Review

Usage Experience

Upon using the Simpson AAA Triplex Plunger Pump, I found it remarkably efficient for various cleaning tasks. Whether I was removing stubborn grime from my driveway or tackling paint stains on my patio furniture, the pump delivered consistent power and performance. The adjustable EZ Start unloader system allowed me to fine-tune the output pressure, making it easy to switch between light and heavy-duty cleaning tasks without hassle. I was particularly impressed by how quickly it installed; the included hoses and fittings made setup a breeze.

Pros and Cons

Pros

  • High pressure and flow rate for effective cleaning.
  • Durable construction materials extend pump life.
  • User-friendly design with an easy-start system.
  • Quick installation process.
  • Versatile compatibility with various engines.

Cons

  • At a price point of $299.99, it may be on the higher end for casual users.
  • Compatibility verification is necessary before purchase, which could be cumbersome for some users.

Conclusion

Overall, the Simpson AAA Triplex Plunger Pump Kit is a robust and efficient solution for anyone looking to invest in a high-performance pressure washer pump. Its combination of durability, ease of use, and high cleaning power makes it a worthwhile addition for both DIY enthusiasts and professionals alike. While the price may be a consideration for some, the long-term benefits and reliable performance are likely to justify the investment. If you are in need of a quality replacement pump that can handle a variety of tough cleaning jobs, the Simpson AAA Triplex Plunger Pump is highly recommended.

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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