---
product_id: 12587649
title: "CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1"
brand: "cat pumps"
price: "€ 1612.69"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/12587649-cat-pumps-pressure-washer-pump-4000-psi-4-0-gpm
store_origin: NL
region: Netherlands
---

# 4.0 GPM flow rate 4000 PSI max pressure Direct drive, 1” hollow shaft CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1

**Brand:** cat pumps
**Price:** € 1612.69
**Availability:** ✅ In Stock

## Summary

> ⚡ Power through grime like a pro with CAT Pumps!

## Quick Answers

- **What is this?** CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1 by cat pumps
- **How much does it cost?** € 1612.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/12587649-cat-pumps-pressure-washer-pump-4000-psi-4-0-gpm)

## Best For

- cat pumps enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Engineered for continuous 12-hour operation with minimal downtime—because your work demands the best.
- • **Durable Brass Manifold:** Built to withstand harsh chemicals and heavy-duty use for long-lasting reliability.
- • **Consistent Flow Efficiency:** 4.0 GPM ensures rapid, thorough washing without compromise.
- • **Unmatched Power & Precision:** Delivers a robust 4000 PSI for professional-grade cleaning performance.
- • **Integrated Chemical Injector:** Easily mix detergents on the go for versatile cleaning solutions.

## Overview

The CAT 66DX40GG1 Pressure Washer Pump combines a high 4000 PSI pressure rating with a steady 4.0 GPM flow, featuring a durable brass manifold and built-in chemical injector. Designed for direct drive systems with a 1” hollow shaft, this pump is engineered for heavy-duty, professional use, delivering reliable performance even during extended 12-hour cleaning sessions.

## Description

CAT 66DX Series Plunger Pressure Washer Pump 1” Hollow Shaft 4.0 GPM 4000 PSI Brass Manifold Built in Chemical Injector

Review: Worth the extra money - I have put this pump through multiple 12 hour days and it has ran flawlessly. Only one issue so far. The oil cap broke off at the top of the threads but customer service sent one out right away and i’m back at it. If you plan to pressure wash regularly buy a cat pump! I have gone through two other brands very quickly and recommend spending a little more to get one that will last.
Review: You get what you pay for! - You get what you pay for! Yes the price is a bit steep, but this is a legit Cat Pump and on my 11hp older GX340, still works great! Plenty of power and gpm, it does bogg down my motor when I have it on full pressure

## Features

- Sold on desertcart

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #610,190 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #361 in Pressure Washer Pumps #7,163 in Pressure Washer Accessories |
| Customer Reviews | 4.4 out of 5 stars 76 Reviews |

## Product Details

- **Brand:** CAT Pumps
- **Color:** Black
- **Material:** Cast Iron
- **Style:** Pressure Washer Pump
- **Power Source:** Gas Powered
- **Item Weight:** 30 Pounds
- **Maximum Flow Rate:** 4 Gallons Per Minute
- **Manufacturer:** Cat Pumps

## Images

![CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1 - Image 1](https://m.media-amazon.com/images/I/81ZC+jq2OZL.jpg)
![CAT Pumps Pressure Washer Pump - 4000 PSI, 4.0 GPM, Direct Drive, Gas, Model Number 66DX40GG1 - Image 2](https://m.media-amazon.com/images/I/81xBcS0QCGL.jpg)

## Questions & Answers

**Q: Will this replace cat pump 4hp40g1?**
A: Yes, this will replace a 4HP, 5DX, 6DX series of pumps.

**Q: Hi, these pump is the same the model: 66dx40g1?  please i try to find it this pump.  thanks**
A: I'm not sure, it does have the pressure and volume as advertised... I've got mine on a 13 horse Honda and it's a great pump

**Q: Will it work with water supply tank that is gravity feed to the pump?**
A: This type of pump requires a flooded suction so the gravity feed supply tank will work very well.

**Q: Can I use this to replace cat pump model 4sf40gs1?**
A: Yes, it will replace a 4SF40GS1  any 4SFxxGS1 it will mount the same.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worth the extra money
*by T***S on June 4, 2019*

I have put this pump through multiple 12 hour days and it has ran flawlessly. Only one issue so far. The oil cap broke off at the top of the threads but customer service sent one out right away and i’m back at it. If you plan to pressure wash regularly buy a cat pump! I have gone through two other brands very quickly and recommend spending a little more to get one that will last.

### ⭐⭐⭐⭐⭐ You get what you pay for!
*by H***Z on August 14, 2022*

You get what you pay for! Yes the price is a bit steep, but this is a legit Cat Pump and on my 11hp older GX340, still works great! Plenty of power and gpm, it does bogg down my motor when I have it on full pressure

### ⭐⭐⭐⭐⭐ Crazy power
*by M***. on February 27, 2022*

This is a legit power washer. Not a big box store model, this thing has thee most power ive ever seen out of a pressure washer. Just make sure you have the engine to support it. I have to GX390. Very impressed. A lot of money but impressed.

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**Shop now:** [https://www.desertcart.nl/products/12587649-cat-pumps-pressure-washer-pump-4000-psi-4-0-gpm](https://www.desertcart.nl/products/12587649-cat-pumps-pressure-washer-pump-4000-psi-4-0-gpm)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-26*