---
product_id: 7841436
title: "Flojet 20403-040 - Diaphragm Kit"
brand: "flojet"
price: "€ 79.66"
currency: EUR
in_stock: false
reviews_count: 12
url: https://www.desertcart.hr/products/7841436-flojet-20403-040-diaphragm-kit
store_origin: HR
region: Croatia
---

# Universal fit for water pumps OEM-quality diaphragm replacement Lightweight & compact design Flojet 20403-040 - Diaphragm Kit

**Brand:** flojet
**Price:** € 79.66
**Availability:** ❌ Out of Stock

## Summary

> 💧 Keep your flow flawless with Flojet’s precision diaphragm kit!

## Quick Answers

- **What is this?** Flojet 20403-040 - Diaphragm Kit by flojet
- **How much does it cost?** € 79.66 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/7841436-flojet-20403-040-diaphragm-kit)

## Best For

- flojet enthusiasts

## Why This Product

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

## Key Features

- • **OEM-Grade Quality:** Restores pump performance to original factory standards with genuine parts.
- • **Compact & Lightweight:** Easy to handle and install without adding bulk or weight.
- • **Trusted Global Leader:** From marine to agricultural, Flojet sets the standard in specialty pumps.
- • **Universal Compatibility:** Fits a wide range of Flojet diaphragm pumps for seamless repairs.
- • **Proven Customer Satisfaction:** Highly rated with 4.4 stars, ensuring reliable and lasting repairs.

## Overview

The Flojet 20403-040 Diaphragm Kit is a lightweight, OEM-quality repair solution designed for universal fit across Flojet diaphragm pumps. Ideal for marine, recreational, and industrial applications, it restores pump efficiency with genuine parts from a global leader trusted by professionals worldwide.

## Description

Flojet is the global leader of specialty diaphragm and magnetic drive pumps and accessories for beverage dispensing, general industrial equipment, agricultural spraying, marine and recreational vehicles.

Review: Repair and replacement for Flojet diaphragm pump - Repair kit has been installed and functioning as the original pumps capacity. Very satisfied although a spanner tool would help is support tightening the plungers.
Review: OEM Packaging. Works great! - New product. In OEM packaging. Nice fix for the pump.

## Features

- package dimensions :11.43 cm L x 8.382 cm W x 1.524 cm H
- Product Type :WATER PUMP
- country of origin :China
- package weight :2.0lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002IV6URG |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #1,558,070 in Automotive ( See Top 100 in Automotive ) #532 in RV Water Pumps & Accessories |
| Brand | Flojet |
| Customer Reviews | 4.4 4.4 out of 5 stars (33) |
| Date First Available | July 24, 2009 |
| Global Trade Identification Number | 00705474900305 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.94 ounces |
| Item model number | 20403-040 |
| Manufacturer | Flojet |
| Manufacturer Part Number | 20403-040 |
| Model | FL20403.040 |
| National Stock Number | 4310-01-620-1644 |
| Product Dimensions | 4 x 12 x 6 inches |
| UPC | 705474900305 |
| Vehicle Service Type | Boat, Motorcycle |
| Weight Class | Heavy Weight |

## Product Details

- **Automotive Fit Type:** Universal Fit
- **Brand:** Flojet
- **Global Trade Identification Number:** 00705474900305
- **Manufacturer:** Flojet
- **UPC:** 705474900305
- **Vehicle Service Type:** Boat, Motorcycle
- **Weight Class:** Heavy Weight

## Images

![Flojet 20403-040 - Diaphragm Kit - Image 1](https://m.media-amazon.com/images/I/71O85+VILJL.jpg)

## Questions & Answers

**Q: Por favor, está certa essa medida? product dimensions	4 x 12 x 6 inches ? qual a medida em cm?**
A: Please ignore the ignorant american saying "...speak English!" - From a good American.

**Q: Will this fit flojet model 4325?**
A: Dont know.  You shud be able to research for this ans easily.

**Q: Is this for 2100-9 pump?**
A: NOPE!.  It's for the quad diaphragm pump.  The 2100-9 is a dual diaphragm.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Repair and replacement for Flojet diaphragm pump
*by D***B on January 6, 2026*

Repair kit has been installed and functioning as the original pumps capacity. Very satisfied although a spanner tool would help is support tightening the plungers.

### ⭐⭐⭐⭐⭐ OEM Packaging. Works great!
*by D***! on April 24, 2025*

New product. In OEM packaging. Nice fix for the pump.

### ⭐⭐⭐⭐⭐ Perfect valve and diaphram repair kit for Flojet quad water pump.
*by D***O on July 1, 2025*

Perfect Flojet 1202.1050 04406-143A Quad Water Pump diaphragm rebuild kit. Old Floject Viton valves slowly deteriorate and lose suction and pump function after spraying herbicide and insecticides for years. The electric motor shaft bearing was also rusty and the shaft was grinding on rotation. After thoroughly lubricating the bearing and installing the new diaphram kit, my quad valve Flojet is again pumping smoothly and powerfully. This is my second kit in 20 years of heavy use. If chemicals are washed out with pure water and then theflojet is pumped dry after each use, Viton valves and diaphrams can last for decades.

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**Shop now:** [https://www.desertcart.hr/products/7841436-flojet-20403-040-diaphragm-kit](https://www.desertcart.hr/products/7841436-flojet-20403-040-diaphragm-kit)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-26*