A hood insulator is fitted to the inside of the bonnet. Its function is to reduce the transmission of noise and vibration from the engine compartment. Hood insulators are manufactured from resin felt, which is inexpensive and has excellent sound absorbency.

Of all automotive sound insulation components, these are the most helpful and offer the most effective soundproofing. They are one of the essential sound insulation components for an automobile. Dash silencers are made from a fibrous material such as thermoset resin felt, thermoplastic resin felt, etc.

Interior trim essential for waterproofing and soundproofing the engine compartment. It also contributes to improved aerodynamic performance.