---
product_id: 521423996
title: "Car Heat Sound Deadening Insulation Mat, - 394 Mil 10.8 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 40 Inch, Aluminum Foil Finish"
brand: "allwin"
price: "3628506₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Allwin"
url: https://www.desertcart.vn/products/521423996-car-heat-sound-deadening-insulation-mat-394-mil-10-8
store_origin: VN
region: Vietnam
---

# 394 mil thickness for max insulation Blocks 98% radiant heat transfer Self-adhesive & flexible for easy install Car Heat Sound Deadening Insulation Mat, - 394 Mil 10.8 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 40 Inch, Aluminum Foil Finish

**Brand:** allwin
**Price:** 3628506₫
**Availability:** ✅ In Stock

## Summary

> 🚗 Silence the noise, block the heat, and ride in luxury!

## Quick Answers

- **What is this?** Car Heat Sound Deadening Insulation Mat, - 394 Mil 10.8 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 40 Inch, Aluminum Foil Finish by allwin
- **How much does it cost?** 3628506₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/521423996-car-heat-sound-deadening-insulation-mat-394-mil-10-8)

## Best For

- allwin enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Application:** Ideal for engine bays, doors, trunks, wheel arches, and more—upgrade every inch of your vehicle.
- • **Waterproof & Odorless:** Closed-cell foam resists moisture and odors, ensuring long-lasting freshness and durability.
- • **Extreme Temperature Range:** Performs flawlessly from -40°F to 300°F, perfect for all-season automotive use.
- • **Premium 394 Mil Thickness:** Robust 10mm foam delivers superior sound and heat insulation for a quieter, cooler ride.
- • **Massive 10.8 Sqft Coverage:** Generous sheet size (40x40 inches) means fewer cuts, faster installs, and seamless protection.

## Overview

This 394 mil thick, 10.8 sqft aluminum foil finished insulation mat expertly reduces engine noise and blocks 98% of radiant heat. Designed for automotive use, it withstands extreme temperatures (-40°F to 300°F), is waterproof, odorless, and self-adhesive for effortless installation on hoods, doors, trunks, and more—perfect for millennial professionals seeking a quieter, cooler, and more comfortable driving experience.

## Description

394 mil (10 mm) Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound DeadenerStrong sound insulation and absorption performance, heat insulation, Reducing energy consumption with the strong performance of heat insulationStrong self-viscous performance

Review: Outboard Motor Soundproofing - Used this to quiet an old outboard motor that was too loud due to the original soundproofing being pretty much gone after many years (even the dealer can't figure out the year of this old motor). Worked great. I haven't measured the exact drop in the decible level, but it's noticeable. Easy to install with the self adhesive backing. Made a template using a paper bag, though I think cardboard would have been easier. Got it close, then dialed in the fit with a pair of utility scissors, laid it out and cut the soundproofing using the template. Double checked the fit before peeling off the adhesive cover and installing.
Review: Seems to work very well. Used on VW engine cover. - The original foam noise insulation mat on my 13 VW Touareg engine cover had turned dry and crumbly after almost 11 years. Several chunks were falling and tearing off. I wanted a new one. But they are NOT sold by Volkswagen, only the entire engine cover $$$. This sound mat works great. It was not hard to work with. I cleaned the engine cover, measuring the old foam insulator first and making a cardboard template. Then with a scraper and acetone, I removed the old insulation foam, and followed up with sandpaper and acetone. I cut the new insulation with a utility knife on a breadboard, and did small trim with industrial scissors. In about an hour, I had a new foam insulator, and it works. Engine noise is a little bit better than before, and it has held up to engine heat.

## Features

- Sound deadening material size: Nominal thickness 394 mils; Total coverage area of 10.8 sqft; Nominal sheet Size 40x40 inches. working Temperature Range: -40°F ~ 300°F
- Heat Insulation and Vibration Deadener: Effectively blocks 98% of radiant heat transfer. Sound deadening mat is a very versatile insulation material with excellent thermal barrier properties that will block engine, exhaust, & summer heat, ensuring your vehicle stays cooler in the summer and warmer in the winter, making your ride more pleasant!
- Automotive self-adhesive insulation is a waterproof lightweight thermal deadener with a highly compressible closed-cell foam formulation, it absolutely doesn’t absorb moisture and has no odor
- The sound dampening mat can be applied to external partitions, firewalls, hoods, engine compartments, engine compartments, trunks, wheel arches, body panels, load floors, and internal partitions under the seat floor.
- The sound dampening material comes in handy size sheets which make it easier in terms of the cutting and installation process and it’s flexible which makes it easy to install with or without a roller.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | ALLWIN |
| Item Thickness | 10 Millimeters |
| Manufacturer | ALLWIN |
| Material | 394 Mil |
| Product Dimensions | 40"L x 40"W |
| Recommended Uses For Product | Automobile sound deadening, heat insulation, and vibration reduction for external partitions, firewalls, hoods, engine compartments, trunks, wheel arches, body panels, load floors, and internal partitions under the seat floor. Recommended Uses For Product Automobile sound deadening, heat insulation, and vibration reduction for external partitions, firewalls, hoods, engine compartments, trunks, wheel arches, body panels, load floors, and internal partitions under the seat floor. See more |

## Product Details

- **Material:** 394 Mil
- **Brand:** ALLWIN
- **Item Thickness:** 10 Millimeters
- **Recommended Uses For Product:** Automobile sound deadening, heat insulation, and vibration reduction for external partitions, firewalls, hoods, engine compartments, trunks, wheel arches, body panels, load floors, and internal partitions under the seat floor.
- **Product Dimensions:** 40"L x 40"W

## Images

![Car Heat Sound Deadening Insulation Mat, - 394 Mil 10.8 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 40 Inch, Aluminum Foil Finish - Image 1](https://m.media-amazon.com/images/I/6198HbggqtL.jpg)

## Questions & Answers

**Q: Would this work for vibration from a sound system?  Im getting rattling in my doors and hatch part..**
A: Maybe but they have sound deadener for that use.

**Q: How much thickness?**
A: Like it says 197mil/ app 1sixteenth thick

## Customer Reviews

### ⭐⭐⭐⭐⭐ Outboard Motor Soundproofing
*by D***D on August 11, 2025*

Used this to quiet an old outboard motor that was too loud due to the original soundproofing being pretty much gone after many years (even the dealer can't figure out the year of this old motor). Worked great. I haven't measured the exact drop in the decible level, but it's noticeable. Easy to install with the self adhesive backing. Made a template using a paper bag, though I think cardboard would have been easier. Got it close, then dialed in the fit with a pair of utility scissors, laid it out and cut the soundproofing using the template. Double checked the fit before peeling off the adhesive cover and installing.

### ⭐⭐⭐⭐⭐ Seems to work very well. Used on VW engine cover.
*by T***N on January 7, 2024*

The original foam noise insulation mat on my 13 VW Touareg engine cover had turned dry and crumbly after almost 11 years. Several chunks were falling and tearing off. I wanted a new one. But they are NOT sold by Volkswagen, only the entire engine cover $$$. This sound mat works great. It was not hard to work with. I cleaned the engine cover, measuring the old foam insulator first and making a cardboard template. Then with a scraper and acetone, I removed the old insulation foam, and followed up with sandpaper and acetone. I cut the new insulation with a utility knife on a breadboard, and did small trim with industrial scissors. In about an hour, I had a new foam insulator, and it works. Engine noise is a little bit better than before, and it has held up to engine heat.

### ⭐⭐⭐⭐⭐ Great for engine cover
*by 6***T on May 5, 2025*

Rodents had started tearing apart the engine cover insulation and using it for nesting (Mazda 3). This provides good insulation that looks and works great, stays in place and doesn't provide nesting material. Would work for insulation attached to the hood as well.

## Frequently Bought Together

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-04*