---
product_id: 390881608
title: "425404 Exhaust Muffler"
brand: "flowmaster"
price: "€ 377.76"
currency: EUR
in_stock: true
reviews_count: 5
category: "Flowmaster"
url: https://www.desertcart.es/products/390881608-425404-exhaust-muffler
store_origin: ES
region: Spain
---

# Aggressive exterior & interior exhaust tone Universal fit for street, strip & off-road 16 gauge aluminized steel - rugged durability 425404 Exhaust Muffler

**Brand:** flowmaster
**Price:** € 377.76
**Availability:** ✅ In Stock

## Summary

> 🔥 Unleash the roar that defines your drive!

## Quick Answers

- **What is this?** 425404 Exhaust Muffler by flowmaster
- **How much does it cost?** € 377.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/390881608-425404-exhaust-muffler)

## Best For

- flowmaster enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last, Welded to Win:** Fully MIG welded 16 gauge aluminized steel ensures unmatched durability and corrosion resistance.
- • **Feel the Power Inside and Out:** Noticeable interior resonance creates an immersive driving experience that’s impossible to ignore.
- • **Versatility Meets Performance:** Universal fit design means seamless installation on a wide range of vehicles, from daily drivers to off-road beasts.
- • **Command Attention with Every Rev:** Delivers that iconic Flowmaster aggressive exterior sound that turns heads on every street and strip.
- • **Proven Excellence, Loved by Drivers:** Rated 4.7 stars by 121 enthusiasts who swear by its deep, powerful rumble and unbeatable value.

## Overview

The Flowmaster 425404 Exhaust Muffler is a robust, fully MIG welded 16 gauge aluminized steel muffler designed for universal fitment. It delivers an aggressive exterior and interior exhaust tone, perfect for street, strip, and off-road applications. With a 4.7-star rating from over 120 reviews, it’s the go-to choice for drivers seeking durable performance and that signature deep rumble.

## Description

The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound, this is the muffler for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

Review: Nice deep rumble - Best bang “rumble” for the buck
Review: Great sound a more oower. I love it. - This muffler isbadass. It sounds awesome!

## Features

- Durable fully welded 16 gauge aluminized steel
- Aggressive sound exterior exhaust tone
- Noticeable interior resonance
- Excellent Street/Strip and Off Road application
- Fit type: Universal Fit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01IDDG3V0 |
| Brand | Flowmaster |
| Brand Name | Flowmaster |
| Compatible with Vehicle Type | Car |
| Configuration | Dual/Dual |
| Customer Reviews | 4.7 out of 5 stars 121 Reviews |
| Global Trade Identification Number | 00700042026029 |
| Included Components | Muffler |
| Inlet Connection Size | 2.5 Millimeters |
| Item Dimensions | 52.1 x 25.4 x 11.4 centimeters |
| Item Type Name | Exhaust Muffler |
| Item Weight | 4.65 kg |
| Item dimensions L x W x H | 52.1 x 25.4 x 11.4 centimeters |
| Item weight | 4.65 kg |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 425404 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | 425404 |
| OEM Equivalent Part Number | 425404 |
| Outlet Connection Size | 2.5 Millimeters |
| Shape | Oval |
| UPC | 700042026029 |
| Unit Count | 1 Count |
| Vehicle service type | Car |

## Product Details

- **Brand:** Flowmaster
- **Item dimensions L x W x H:** 52.1 x 25.4 x 11.4 centimeters
- **Item weight:** 4.65 kg
- **Material:** Alloy Steel
- **Vehicle service type:** Car

## Images

![425404 Exhaust Muffler - Image 1](https://m.media-amazon.com/images/I/71PeQy5X1iL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice deep rumble
*by A***M on 29 October 2020*

Best bang “rumble” for the buck

### ⭐⭐⭐⭐⭐ Great sound a more oower. I love it.
*by C***N on 26 November 2025*

This muffler isbadass. It sounds awesome!

### ⭐⭐⭐⭐⭐ Good volume
*by J***S on 17 October 2025*

Great muffler

## Frequently Bought Together

- Flowmaster 425404 40 Series Chambered Muffler
- EVIL ENERGY 2.5 Inch Exhaust Clamp,2 1/2" Butt Joint Band Clamp Sleeve Coupler Stainless Steel for Pipes,Mufflers,Catalytic Converters 1PCS
- EVIL ENERGY 2.5'' Exhaust Clamp,Lap Joint Band Clamp Stainless Steel for Pipes,Mufflers,Catalytic Converters (1, 2.5 inch)

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**Shop now:** [https://www.desertcart.es/products/390881608-425404-exhaust-muffler](https://www.desertcart.es/products/390881608-425404-exhaust-muffler)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-07-08*