Design Engineering DEI 51400 Pre-Cut Thermal Acoustic Complete Insulation & Damping Kit for Camaro/Firebird Coupe with Factory AC

The Design Engineering (DEI) 51400 is a complete pre-cut thermal acoustic insulation and damping kit engineered specifically for 1967–1969 Chevrolet Camaro and Pontiac Firebird F-body coupes equipped with factory air conditioning. This all-in-one interior heat and sound control kit delivers a comprehensive, no-guesswork solution for dramatically reducing cabin temperatures and unwanted noise.

Three-Material System:

• Boom Mat 2mm Damping Material — eliminates unwanted engine and road noise while dampening vibrations in floors, doors, and body panels
• Under Carpet Lite — a lightweight, high-performance heat and noise barrier designed specifically for floor areas; high-temp spray adhesive included
• D-Mat Ultra Lightweight Insulation — a superior heat barrier material for firewalls, headliners, trunks, and other interior surfaces

Key Features:

• Complete kit covers all major interior areas: floors, firewall, headliner, trunk, and more
• All pieces are custom pre-cut for a precise, factory-style fit — no trimming required
• Reduces tire, road, and engine noise throughout the interior
• Blocks heat transferred from the engine bay and hot exhaust beneath the floorboards
• Formulated specifically for the factory AC configuration of the 1967–1969 coupe body style
• Fully illustrated installation instructions included for a straightforward, no-guesswork installation
• Also sold under part number 500400

DEI is a family-owned, US-based manufacturer with over 25 years of experience specializing in premium heat and sound control products for automotive, powersports, marine, and RV applications. The DEI 51400 kit is the most complete and affordable way to restore interior comfort to your classic F-body.