---
product_id: 23326046
title: "AAA 90036 Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4\" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines, Black"
brand: "simpson"
price: "£238.13"
currency: GBP
in_stock: true
reviews_count: 10
category: "Simpson"
url: https://www.desertcart.co.uk/products/23326046-aaa-90036-horizontal-triplex-plunger-replacement-pressure-washer-pump-kit
store_origin: GB
region: United Kingdom
---

# 2.8 GPM flow rate 3200 PSI max pressure 3/4" shaft, SAE bolt pattern AAA 90036 Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines, Black

**Brand:** simpson
**Price:** £238.13
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your clean game—power, precision, and durability in one pump!

## Quick Answers

- **What is this?** AAA 90036 Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines, Black by simpson
- **How much does it cost?** £238.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/23326046-aaa-90036-horizontal-triplex-plunger-replacement-pressure-washer-pump-kit)

## Best For

- simpson enthusiasts

## Why This Product

- Trusted simpson brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Kit with Hardware & Siphon Tube:** Everything you need for a quick, hassle-free upgrade and extended pressure washer life.
- • **Universal Fit for Horizontal Gas Engines:** Seamlessly replace your pump with SAE standard bolt pattern and garden hose inlet compatibility.
- • **Built to Last with Dual Oversized Bearings:** Minimize friction and maximize durability in the toughest industrial environments.
- • **Oil Sight Glass for Effortless Maintenance:** Instantly monitor oil levels and quality—no dipstick needed, no guesswork.
- • **PowerBoost Technology for Precision Cleaning:** Adjust pressure on-demand with a simple hand knob for versatile cleaning power.

## Overview

The AAA 90036 Horizontal Triplex Plunger Replacement Pump Kit delivers industrial-grade 3200 PSI pressure and 2.8 GPM flow for gas-powered pressure washers with horizontal engines. Featuring PowerBoost Technology, dual oversized bearings, and an oil sight glass, this stainless steel pump ensures efficient, long-lasting performance. Compatible with SAE bolt patterns and standard garden hose connections, it includes all necessary hardware and a siphon tube for easy installation and maintenance.

## Description

Engineered to surpass expectations, the 90036 AAA® Professional Triplex Pump is highly efficient and minimizes engine load while delivering top performance. This easy-to-install pump replacement kit is for gas pressure washers* with a horizontal engine and a 3/4" diameter shaft, such as the Honda GX200. This pump can produce up to 3200 PSI at 2.8 GPM. The 90036 is designed with dual oversized ball bearings to reduce friction and allow for long lasting performance in the toughest cleaning environments. The 90036 features a stainless steel integrated unloader featuring our easy-start system. (*Check your pressure washer's inlet and outlet orientation to ensure compatibility)

Review: The pump will fail with out water. - I purchased this to replace the original pump on my Simpson pressure washer which was almost new. The pump works great and is the same as on the original pressure washer. I would caution that the pump works great as long as the water is turned on. The pump is of a very good quality but has plastic valves - if the water stops the pump heats up very quickly and the plastic valves just melt and the pump no longer functions. This was my experience - the water stopped and the valves melted. I purchased the entire pump since just the valve portion was not available.
Review: Direct replacement - Mounted right up and worked fantastic. Pressure was slightly higher than the original. Nice replacement part.

## Features

- Extend the life of your pressure washer: Save money by replacing your pump instead of buying a whole new power washer. This easy-to-install kit is great for power washers that can support 3200 PSI at 2.8 GPM to wash walls, sidewalks, vehicles, and more
- Compatibility: SAE standard bolt pattern fits many gas pressure washers with horizontal engines. To ensure compatibility, be sure to match engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet and outlet connection
- Adjustable power: Pump includes PowerBoost Technology that delivers higher pressure at the nozzle for a more efficient cleaning experience; There is also a hand turn knob that lets you reduce power at your convenience for tasks that require lower pressure
- Know when to change your oil: The sight glass and advanced oil seal technology eliminates the need for a dipstick. With visibility to the oil level and the oil itself, you can easily see when oil levels are low or if water has clouded the oil
- Standard Connections: This replacement pump features a garden hose inlet and threaded M22 connection high pressure hose outlet; Use it with many pressure washer hoses, including Simpson MorFlex models 40224, 40225, 40226 and Santoprene model 41182

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00TQLMNLI |
| Best Sellers Rank | #132,853 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,648 in Pressure Washer Accessories |
| Brand | SIMPSON |
| Brand Name | SIMPSON |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 247 Reviews |
| Flow Rate | 2.8 Gallons Per Minute |
| Global Trade Identification Number | 00879399002069 |
| Included Components | Pump |
| Item Dimensions L x W x H | 12"L x 9"W x 4"H |
| Item Type Name | Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines |
| Item Weight | 9 Pounds |
| Manufacturer | simpson |
| Manufacturer Part Number | 90030 |
| Manufacturer Warranty Description | 5 year warranty |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Maximum Lifting Height | 22 Meters |
| Model Number | 90036 |
| Power Source | Gas Powered |
| Product Dimensions | 12"L x 9"W x 4"H |
| Product Style | 3200 PSI at 2.8 GPM |
| Style | 3200 PSI at 2.8 GPM |
| UPC | 879399002069 |
| Unit Count | 1.0 Count |
| Voltage | 120 |

## Product Details

- **Brand:** SIMPSON
- **Color:** Black
- **Item Weight:** 9 Pounds
- **Material:** Stainless Steel
- **Maximum Flow Rate:** 2.8 Gallons Per Minute
- **Maximum Lifting Height:** 22 Meters
- **Power Source:** Gas Powered
- **Product Dimensions:** 12"L x 9"W x 4"H
- **Style:** 3200 PSI at 2.8 GPM
- **Voltage:** 120

## Images

![AAA 90036 Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines, Black - Image 1](https://m.media-amazon.com/images/I/71JevWBcB6S.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The pump will fail with out water.
*by D***E on September 10, 2020*

I purchased this to replace the original pump on my Simpson pressure washer which was almost new. The pump works great and is the same as on the original pressure washer. I would caution that the pump works great as long as the water is turned on. The pump is of a very good quality but has plastic valves - if the water stops the pump heats up very quickly and the plastic valves just melt and the pump no longer functions. This was my experience - the water stopped and the valves melted. I purchased the entire pump since just the valve portion was not available.

### ⭐⭐⭐⭐⭐ Direct replacement
*by M***H on January 10, 2025*

Mounted right up and worked fantastic. Pressure was slightly higher than the original. Nice replacement part.

### ⭐⭐⭐⭐ Great stereo sound. Excellent. Had it 3 weeks.
*by A***U on December 15, 2025*

I am very happy with the bluetooth so far. Had it for 3 weeks. It alerts when you walk away from your phone when connected. It warns low battery. Great stereo sound. I wish it had a last number call back feature. USB port is at top. If this comes loose, or open, rain might enter.

## Frequently Bought Together

- AAA 90036 Horizontal Triplex Plunger Replacement Pressure Washer Pump Kit, 3200 PSI, 2.8 GPM, 3/4" Shaft, Includes Hardware and Siphon Tube, for Industrial Gas Powered Machines, Black
- Valley Industries Pressure Washer Premium Pump Oil - 1 Liter, Black, (PK-85490000)
- STA-BIL Pump Protector - Protects Pressure Washer Pumps and Other Internal Components During Storage, Next Gen Anti-Freeze and Lubricant Formula, 4oz (22007) , Red

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.uk/products/23326046-aaa-90036-horizontal-triplex-plunger-replacement-pressure-washer-pump-kit](https://www.desertcart.co.uk/products/23326046-aaa-90036-horizontal-triplex-plunger-replacement-pressure-washer-pump-kit)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-27*