---
product_id: 81757853
title: "4 x 4 in. Cast Iron or Plastic Flexible Coupling"
brand: "fernco"
price: "£45.27"
currency: GBP
in_stock: true
reviews_count: 4
category: "Fernco"
url: https://www.desertcart.co.uk/products/81757853-4-x-4-in-cast-iron-or-plastic-flexible-coupling
store_origin: GB
region: United Kingdom
---

# Multi-material compatibility Heavy earth load resistance 4x4 inch versatile fit 4 x 4 in. Cast Iron or Plastic Flexible Coupling

**Brand:** fernco
**Price:** £45.27
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect with confidence — the flexible coupling that holds your pipes and your projects together.

## Quick Answers

- **What is this?** 4 x 4 in. Cast Iron or Plastic Flexible Coupling by fernco
- **How much does it cost?** £45.27 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/81757853-4-x-4-in-cast-iron-or-plastic-flexible-coupling)

## Best For

- fernco enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Quality:** Fernco’s proven reliability with a 4.9-star rating and top-tier industrial ranking.
- • **Built to Withstand:** Engineered to resist heavy earth loads and shear forces, ensuring long-lasting durability.
- • **Compact & Lightweight:** At just 1.4 pounds, easy to handle and install without compromising strength.
- • **Universal 4x4 Coupling:** Seamlessly connects cast iron, plastic, copper, steel, or lead pipes for ultimate flexibility.
- • **Precision Pipe Alignment:** Improves pipe alignment to reduce leaks and maintenance downtime.

## Overview

The Fernco 4 x 4 in. Flexible Coupling is a robust plumbing connector designed to join cast iron, plastic, copper, steel, or lead pipes. Engineered for heavy earth load resistance and improved pipe alignment, it offers durable, versatile performance in a compact form factor. Trusted by professionals and rated 4.9 stars, it’s the go-to solution for reliable pipe connections.

## Description

Product Overview

Review: Worked as it should - Works as it should
Review: Perfect, exactly what i was looking for - Fit like a glove

## Features

- Designed for resistance to heavy earth loads and shear forces, while providing improved pipe alignment
- Connects CI, plastic, copper, steel or lead to CI, plastic, copper, steel or lead

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FJ7K5P3 |
| Best Sellers Rank | #338,774 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10,614 in Pipe Fittings |
| Brand Name | Fernco |
| Color | Copper |
| Connector Type | Coupling |
| Customer Reviews | 4.9 4.9 out of 5 stars (10) |
| Item Weight | 1.4 Pounds |
| Manufacturer | Fernco |
| Material Type | Copper,Lead,Plastic,Steel,Iron |
| Number of Pieces | 1 |
| Size | 4 x 4 inches |
| Thread Type | NPT |
| UPC | 018578016903 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Fernco
- **Color:** Copper
- **Connector Type:** Coupling
- **Item Weight:** 1.4 Pounds
- **Manufacturer:** Fernco
- **Material:** Copper,Lead,Plastic,Steel,Iron
- **Number of Pieces:** 1
- **Size:** 4 x 4 inches
- **Thread Type:** NPT
- **UPC:** 018578016903

## Images

![4 x 4 in. Cast Iron or Plastic Flexible Coupling - Image 1](https://m.media-amazon.com/images/I/61rfXBJBPRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked as it should
*by R***D on May 12, 2025*

Works as it should

### ⭐⭐⭐⭐⭐ Perfect, exactly what i was looking for
*by S***. on July 1, 2024*

Fit like a glove

### ⭐⭐⭐⭐⭐ As advertised
*by E***4 on September 4, 2023*

I’d buy more stuff it’s as advertised for a decent price.

## Frequently Bought Together

- Fernco 4 x 4 in. Cast Iron or Plastic Flexible Coupling
- Fernco 4-inch XL Flexible Pipe Coupling Connector Fitting with Stainless Shield, Below Ground Plastic, Cast Iron, Steel
- Fernco XL 1056-442 Flexible Pipe Coupling 4” CI/Plastic/Steel to 4” CI/Plastic/Steel

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**Shop now:** [https://www.desertcart.co.uk/products/81757853-4-x-4-in-cast-iron-or-plastic-flexible-coupling](https://www.desertcart.co.uk/products/81757853-4-x-4-in-cast-iron-or-plastic-flexible-coupling)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-17*