---
product_id: 564232966
title: "Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Compatible with ALL Portable & Backup Generators"
brand: "zombiebox"
price: "1840 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Zombiebox"
url: https://www.desertcart.dk/products/564232966-portable-generator-exhaust-extension-silencer-kit-exhaust-extension-system-3
store_origin: DK
region: Denmark
---

# up to 10dB noise reduction 3 universal adapters included rust-free industrial materials Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Compatible with ALL Portable & Backup Generators

**Brand:** zombiebox
**Price:** 1840 kr
**Availability:** ✅ In Stock

## Summary

> 🔇 Quiet power, amplified peace of mind.

## Quick Answers

- **What is this?** Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Compatible with ALL Portable & Backup Generators by zombiebox
- **How much does it cost?** 1840 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/564232966-portable-generator-exhaust-extension-silencer-kit-exhaust-extension-system-3)

## Best For

- zombiebox enthusiasts

## Why This Product

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

## Key Features

- • **Pioneered in the USA:** The original and best exhaust extension system trusted by pros to safely vent fumes and keep generator enclosures cool and quiet.
- • **Built to Last, Rust-Free:** Crafted from aluminized steel, galvanized metal, and powder-coated parts for unbeatable corrosion resistance and durability.
- • **DIY Friendly Installation:** Includes self-drilling screws and mounting hardware for flexible, secure installation—even if your muffler holes don’t line up perfectly.
- • **Universal Fit, Zero Hassle:** 3 versatile adapters (slip-on, bolt-on, collector) ensure compatibility with most portable generators—customize your fit effortlessly.
- • **Silence the Noise, Boost Efficiency:** Engineered to reduce exhaust noise by up to 10dB while maintaining optimal engine airflow and preventing carbon monoxide buildup.

## Overview

The Zombiebox Portable Generator Exhaust Extension Silencer Kit is a premium, rust-resistant exhaust system designed to fit most portable generators. Featuring three universal adapters and engineered for up to 10dB noise reduction, it safely vents exhaust fumes from enclosed spaces while improving engine efficiency. Easy to install with included hardware, this USA-invented kit is the go-to solution for professionals seeking quieter, safer generator operation.

## Description

Buy Zombiebox Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Compatible with ALL Portable & Backup Generators: Generators & Portable Power - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Well put together kit - Bought this to allow the exhaust to exit my generator shack due to heat and lack of fresh air . Generator wouldn't run closed up. After the exhaust Kit and a fan operated vent system. It runs well now. Kit is well made and includes all parts necessary for most instalations. Be aware that it is Not Quiet! Sounds like glass pack. Your neighbors probably won't like it, but you might smile.
Review: Makes The Sound Box Quieter and With a Lower Tone Than Stock Muffler - Pros: The unit actually made my 5000 W Briggs and Stranton Generator 5dB quieter when used inline with the stock muffler. It also lowered the tone of the exhaust noise which is easier on the ears. Enclosing the entire stock generator in the box with no exhaust outlet other than the 1000 CFM exhaust/cooling fan reduced the noise 10 dB, from 90 db to 80 db (the fan kept the temps in a good operating range). The silencer kit quieted it an additional 5 dB and cooled the box further by moving the exhaust gasses exit the box directly. We are now running at about 75dB which is normal conversation levels or an average radio volume. The original stock generator outside of the sound box had a noise level of 90 db which is like being next to a busy highway where you must raise your voice to talk to have someone hear you. Cons: Was not easy to install and required some hole drilling and grinding for it to fit onto my generator. The instructions were poor to non-existent. The flexible exhaust made large diameter bends; I would have liked a little tighter bend.

## Features

- UNIVERSAL ADAPTERS: The original. Zombiebox universal generator exhaust extension silencer kit, allows for safe venting of exhaust fumes from a DIY enclosure or space, like a garage or shed. Fits MOST portable generator makes and models! Some modification of the adapter may be required. 3 adapter styles included for you to find the perfect fit: including slip-on, bolt on and collector style.
- MULTIPLE WAYS TO INSTALL: The exhaust adapter bolts onto the generator's stock muffler outlet. Self-drilling screws are included for generator mufflers that don’t have holes or holes that don’t line up to mount the generator exhaust adapter, otherwise you can use generator’s original bolts. 5 inch hole recommended for wall mount bracket. NOTE: mounting holes might not line up to the muffler you have - NO WORRIES - use the supplied self drilling screws to attach it directly to the muffler or shroud.
- RUST FREE INDUSTRIAL MATERIALS: Made from industrial-grade aluminized steel alloy, galvanized sheet metal, and powder-coated parts to prevent corrosion and rust. Includes: 3 styles of universal muffler adapters, 2 clamps, 1 flexible hose, 1 muffler silencer, 1 wall mounting plate.
- IMPROVED EFFICIENCY & AIRFLOW: Engineered for lower noise emissions and maximum engine efficiency. No engine back pressure allows for safe venting of exhaust fumes from an enclosure, shed, or barrier. Prevents carbon monoxide buildup and shutoff problems in DIY enclosures. This kit will change the tone of the stock exhaust noise. For more noise reduction, purchase a ZHut Zombiebox Acoustic barrier.
- THE ORIGINAL EXHAUST EXTENSION: Invented and perfected in the USA, Zombiebox is the first and best generator exhaust extension for portable generators. Minimal thermal transfer to wall or enclosure. (*Only when enclosed in a ZombieBox, shed, or outbuilding will it make the exhaust noise quieter). DO NOT remove your generator's muffler system; ADD this system to it! NO FREE RETURNS.
- FITS MOST GENERATORS: Fits Westinghouse, EcoFlow, Pulsar, Ryobi, Firman, Honda, Duromax, WGen, Genmax, Predator, NorthStar, PowerHorse, Champion, Generac, & More.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJDH2YRR |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #17,432 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #462 in Outdoor Generators & Portable Power |
| Brand | Zombiebox |
| Customer Reviews | 4.3 4.3 out of 5 stars (255) |
| Date First Available | September 23, 2023 |
| Exterior | Painted |
| Global Trade Identification Number | 00860008101440 |
| Item Weight | 6.99 pounds |
| Item dimensions L x W x H | 14 x 5 x 14 inches |
| Item model number | ZPW14 |
| Manufacturer | Zombiebox |
| Manufacturer Part Number | ZPW14 |
| Model | Through Wall Muffler Extension Kit |
| OEM Part Number | ZPW14 |
| Outlet Connection Size | 1.75 Inches |
| Product Dimensions | 14 x 5 x 14 inches |
| Safety Rating | Original Manufacturer |
| Vehicle Service Type | All |

## Product Details

- **Brand:** Zombiebox
- **Item Weight:** 6.99 Pounds
- **Item dimensions L x W x H:** 14 x 5 x 14 inches
- **Material:** Aluminized Steel Alloy,Metal
- **Vehicle Service Type:** All

## Images

![Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Compatible with ALL Portable & Backup Generators - Image 1](https://m.media-amazon.com/images/I/618Df8lPOpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well put together kit
*by T***. on June 29, 2025*

Bought this to allow the exhaust to exit my generator shack due to heat and lack of fresh air . Generator wouldn't run closed up. After the exhaust Kit and a fan operated vent system. It runs well now. Kit is well made and includes all parts necessary for most instalations. Be aware that it is Not Quiet! Sounds like glass pack. Your neighbors probably won't like it, but you might smile.

### ⭐⭐⭐⭐ Makes The Sound Box Quieter and With a Lower Tone Than Stock Muffler
*by M***K on August 5, 2024*

Pros: The unit actually made my 5000 W Briggs and Stranton Generator 5dB quieter when used inline with the stock muffler. It also lowered the tone of the exhaust noise which is easier on the ears. Enclosing the entire stock generator in the box with no exhaust outlet other than the 1000 CFM exhaust/cooling fan reduced the noise 10 dB, from 90 db to 80 db (the fan kept the temps in a good operating range). The silencer kit quieted it an additional 5 dB and cooled the box further by moving the exhaust gasses exit the box directly. We are now running at about 75dB which is normal conversation levels or an average radio volume. The original stock generator outside of the sound box had a noise level of 90 db which is like being next to a busy highway where you must raise your voice to talk to have someone hear you. Cons: Was not easy to install and required some hole drilling and grinding for it to fit onto my generator. The instructions were poor to non-existent. The flexible exhaust made large diameter bends; I would have liked a little tighter bend.

### ⭐⭐⭐⭐⭐ Great Addition to my Generator
*by B***5 on November 11, 2023*

I have a duel fuel generator in my shed in the yard. My power goes out to the shed from the house using a #6 wire. ( I previously had a pool filter which was supplied by power from the shed) I'm using the only connection to the house to run power from the generator back to the house. The issue was CO build up in the shed which would shut down the generator. Alas!!!! Along comes Zombie Box with a external exhaust tube to connect and run exhaust out of the shed; brilliant! (wish I had thought of it!) I order the muffler kit, which arrived as advertised, and hooked it up. (See photos) The muffler doesn't get too hot on the outside so it's really safe. I was worried because I have a grand daughter who could come in contact if she was over here and it was running. Also worried about CO but the exhaust tube works great. I added muffler sealer paste and two layers of Tiger Tape muffler sealer. I close the shed, run the unit and no CO build up. This is great for keeping my generator out of the weather and protected from the elements. No more moving it around!

## Frequently Bought Together

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-09*