---
product_id: 41234454
title: "BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader"
brand: "bertolini"
price: "KD 245.54"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/41234454-bertoliniwmg-4031-4000-psi-3-1-us-gpm-1-in
store_origin: KW
region: Kuwait
---

# 3.1 gpm flow rate 140°F max temp Fully rebuildable BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader

**Brand:** bertolini
**Price:** KD 245.54
**Availability:** ✅ In Stock

## Summary

> 🚀 Power Up Your Cleaning Game!

## Quick Answers

- **What is this?** BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader by bertolini
- **How much does it cost?** KD 245.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/41234454-bertoliniwmg-4031-4000-psi-3-1-us-gpm-1-in)

## Best For

- bertolini enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Brass head and ceramic piston ensure longevity and reliability.
- • **Unmatched Power:** Experience a staggering 4,000 psi for ultimate cleaning efficiency.
- • **Italian Engineering:** Crafted in Italy, this pump combines style with performance.
- • **Versatile Compatibility:** Fits standard SAE J609 flanges for seamless integration with your gas-powered pressure washer.
- • **Support at Your Fingertips:** Enjoy 7x5 support from Canada via phone, email, or live chat.

## Overview

The Bertolini WMG 4031 is a high-performance pressure washer pump delivering 4,000 psi at 3.1 gpm. Designed for gas-powered pressure washers, it features a durable brass head, ceramic piston, and is fully rebuildable. With compatibility for standard SAE J609 mounting flanges, this pump is perfect for professionals seeking reliability and efficiency. Plus, enjoy dedicated support from Canada to keep your operations running smoothly.

## Description

BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader

## Features

- 4,000 psi at 3.1 gpm, triplex plunger, 1-inch hallow shaft, 1/2-inch inlet, 3/8-inch outlet, maximum temperature at 140 °F (60 °C)
- The Italian-made Bertolini WMG 4031 is a compact direct-drive pumps for gas-powered pressure washers; brass Head and ceramic piston
- Valve caps are fitted with the same new sealing system used in Bertolini's higher performance pumps
- Compatibility: Standard SAE J609 mounting flange for up to 11 hp direct-drive gasoline engines with 1″ horizontal shafts
- Fully rebuildable with avilable in repair kits through Green Canpump
- Includes Unloader valve APR 40 , inlet water filter, quick-connect outlet
- 7x5 toll-free phone, email and live chat support from Canada

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Idromeccanica Bertiloni Srl. |
| Part Number | 4031 |
| Item Weight | 24.2 pounds |
| Product Dimensions | 10 x 12 x 8 inches |
| Item model number | 4031 |
| Is Discontinued By Manufacturer | No |
| Color | Green |
| Power Source | manual, gasoline, gas engine |
| Flow Rate | 3.1 Gallons Per Minute |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader - Image 1](https://m.media-amazon.com/images/I/81FmvWctwCL.jpg)
![BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader - Image 2](https://m.media-amazon.com/images/I/61xKKjZdkDL.jpg)
![BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader - Image 3](https://m.media-amazon.com/images/I/91-yEbmYueL.jpg)
![BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader - Image 4](https://m.media-amazon.com/images/I/61G7n8O+XpL.jpg)
![BertoliniWMG 4031: 4000 psi @ 3.1 US gpm, 1 in Shaft Pressure Washer Pump w/Unloader - Image 5](https://m.media-amazon.com/images/I/51WvlzZQ4IL.jpg)

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**Shop now:** [https://www.desertcart.com.kw/products/41234454-bertoliniwmg-4031-4000-psi-3-1-us-gpm-1-in](https://www.desertcart.com.kw/products/41234454-bertoliniwmg-4031-4000-psi-3-1-us-gpm-1-in)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-06*