Pressure Washered

3700 PSI Replacement Pressure Washer Pump Kit Review

Editor's Choice

AAA 3700 PSI Pressure Washer Pump Kit

Enhances cleaning power with adjustable performance
9.2/10
EXPERT SCORE
Revitalize your pressure washer with the AAA 3700 PSI pump kit, designed for powerful cleaning performance and easy installation. This replacement pump enhances pressure and efficiency for a variety of cleaning tasks.
Updated: July 23, 2026 12:32 pm

Introduction

The AAA 3700 PSI Pressure Washer Pump Kit, model 90037, is designed to be a reliable replacement for your worn-out pressure washer pump. Manufactured by AAA, a trusted name in power equipment, this pump kit is ideal for both home use and professional applications. It is specifically engineered to restore the performance of gas-powered pressure washers, offering exceptional cleaning capabilities with up to 3700 PSI at a flow rate of 2.5 GPM.

Product Overview

This pump kit features a sleek black aesthetic and is made from high-quality materials, ensuring durability and reliability. With a design that includes a brass manifold and stainless steel components, it stands out for its robust construction and longevity. The kit is also equipped with a garden hose inlet and a threaded M22 connection, making it versatile for various attachments.

Key Features

  • Pressure & Flow: Provides up to 3700 PSI with a flow rate of 2.5 GPM.
  • Compatibility: Fits horizontal engines with a 3/4″ shaft, such as the Honda GX200.
  • Easy Installation: SAE standard bolt pattern for straightforward installation.
  • PowerBoost Technology: Adjustable performance allows for pressure adjustments to suit different tasks.
  • Durability: Features dual oversized ball bearings, a thermal relief valve, and an advanced oil seal technology.
  • Warranty: Comes with a 5-year warranty for peace of mind.
See also  Biswing 3400 PSI Pressure Washer Pump Review

Experience Using the Product

Upon installation, the AAA 3700 PSI Pump Kit immediately impresses with its ease of setup. The instructions provided were clear and comprehensive, allowing for a hassle-free installation process. Once up and running, the pump performed exceptionally well across various cleaning scenarios. From washing the siding of my home to tackling tough stains on the driveway, the adjustable performance feature allowed me to easily switch between low and high pressure as needed.

During a heavy-duty cleaning task, such as washing fleet vehicles, the PowerBoost Technology proved invaluable. The ability to dial in the pressure at the nozzle made it simple to adapt to different surfaces without causing damage. Additionally, the thermal relief valve functioned perfectly, preventing overheating during extended use.

Pros and Cons

Pros:

  • High-pressure output suitable for tough cleaning jobs.
  • Durable construction with quality materials for longevity.
  • Easy installation and compatibility with many models.
  • Adjustable pressure settings enhance versatility.
  • Comes with a generous 5-year warranty.

Cons:

  • Initial cost may be higher than some generic alternatives.
  • Requires some mechanical knowledge for installation, which might be a barrier for novice users.

Conclusion

Overall, the AAA 3700 PSI Pressure Washer Pump Kit is a standout choice for anyone needing a reliable replacement pump. Its combination of durability, performance, and versatility makes it an excellent investment for both residential and professional cleaning tasks. While the price may be higher than some other options on the market, the quality and effectiveness justify the investment. If you’re looking to restore your pressure washer’s cleaning power, this pump kit 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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