Design Engineering Dei
Design Engineering Dei 50295 Thermal & Acoustic Interior Kit for 1990-2005 Miata
Design Engineering DEI 901026 Heat Shield Liner Kit for Vance & Hines Power Duals
Design Engineering DEI 51406 Pre-Cut Thermal Acoustic Kit for Camaro/Firebird Trunk Divider
Design Engineering DEI 51403 Thermal Acoustic Insulation & Damping Kit - Complete Pre-Cut Interior Kit
Design Engineering DEI 901055 Heat Shield Liner Kit for Harley Sportster XL Models 2014-2021
DEI 901051 Heat Shield Liner Kit for Harley Davidson FXST FLST Vance & Hines Short Shots
Design Engineering DEI 51402 Interior Insulation & Damping Kit Camaro Firebird Convertible w/Factory AC
Design Engineering DEI 51102 Sprinter Van 170EXT Floor Insulation Kit Single Wheel
Design Engineering DEI 901058 Heat Shield Liner Kit for Indian Chief, Chieftain, Roadmaster & Springfield (2021-2022)
Design Engineering DEI 51400 Pre-Cut Thermal Acoustic Complete Insulation & Damping Kit for Camaro/Firebird Coupe with Factory AC
Design Engineering DEI 51404 Pre-Cut Thermal Acoustic Trunk Insulation & Damping Kit for 1967-1969 Camaro/Firebird
Design Engineering DEI 51105 Floor Insulation Kit Mercedes Sprinter 170EXT Dually
Design Engineering Dei 50101 Under Carpet Lite Heat & Sound Insulation 48" x 54"
Design Engineering DEI 50145 Jeep Wrangler TJ Sound Deadening Headliner 1997-2006 White 2-Piece
Design Engineering DEI 10820 Spark Plug Wire Boot Heat Shrink Tubes 18mm x 1.5" Red (25-Pack)
Representative Photo, actual item may vary
Design Engineering DEI 10800 Spark Plug Wire Boot Heat Shrink Tubes 18mm x 1.5" Grey (25-Pack)
Design Engineering DEI 10732 Protect-A-Boot Spark Plug Wire Heat Shield Kit 8-Cylinder Blue
Design Engineering Dei 10722 Protect-A-Boot Spark Plug Boot Protector Kit - 8-Cylinder Red
Design Engineering DEI 50292 Boom Mat Sound Deadening Headliner Kit for Jeep Wrangler JK
Design Engineering DEI 50536 Boom Mat Sound Deadening Headliner Kit 0.5" x 75" x 54"
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Design Engineering DEI 901080 Heat Shield Liner Kit for Harley Davidson Touring with Vance & Hines Pro Pipe
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Design Engineering DEI 50130 Boom Mat Under-Hood Thermal Acoustic Insulation 32" x 54" x 0.75"
Design Engineering DEI 10522 Protect-A-Boot Spark Plug Boot Protector 6" Red 8-Pack
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Representative Photo, actual item may vary
Design Engineering DEI AFRFD2621 AstroStart 2-Way Remote Antenna Upgrade Kit
About Design Engineering Inc. (DEI)
Design Engineering Inc. — widely known as DEI — has built a reputation as one of the most trusted names in automotive thermal and acoustic management. For decades, DEI has engineered products that solve two of the most persistent challenges in performance and everyday driving: unwanted heat and unwanted noise. Their catalog spans everything from race-proven exhaust wraps to premium acoustic headliner materials, making them a go-to resource for both professional builders and weekend enthusiasts.
A Heritage of Heat Management Innovation
DEI's roots are firmly planted in the world of motorsport, where controlling underhood and exhaust temperatures isn't just about comfort — it's about performance and reliability. Excess heat robs horsepower, degrades components, and creates safety concerns. DEI addressed this challenge head-on by developing a comprehensive line of thermal barriers, wraps, and shields that are equally at home on the track and on the street.
One of the brand's most popular product families is their Exhaust System Wrap lineup. These wraps help contain exhaust heat within the pipe, reducing radiant heat in the engine bay, improving exhaust scavenging, and protecting nearby components from heat damage. Whether you're building a show car or a dedicated race machine, DEI's exhaust wraps deliver measurable results.
For turbocharged builds, DEI offers a specialized line of Turbocharger Heat Shields designed to protect surrounding components from the extreme temperatures generated by forced-induction systems. These shields are engineered to fit a wide variety of turbo setups and are constructed from DEI's proven heat-reflective materials. Complementing these are their Exhaust Heat Shields, which provide targeted protection for areas where exhaust pipes run close to fuel lines, chassis components, or the passenger compartment.
For complete exhaust system projects, DEI also offers convenient Exhaust System Wrap Kits that bundle everything needed for a full wrap job — making it easier to get consistent, professional results without hunting down individual components.
Acoustic Solutions: The DEI Headliner
Beyond heat, DEI has made a significant mark in the world of acoustic management. Their Headliner products are engineered to reduce road noise, suppress heat transfer into the cabin, and improve the overall driving experience. These materials are popular in custom builds, restorations, and daily drivers alike, offering a straightforward way to dramatically improve cabin comfort.
Why Choose DEI?
- Motorsport-proven technology adapted for street and performance applications
- A broad product range covering thermal and acoustic challenges
- Easy-to-install formats including wraps, shields, kits, and liner materials
- Trusted by professional fabricators, race teams, and DIY enthusiasts worldwide
From a roll of exhaust wrap to a complete turbo heat management system, DEI consistently delivers products that perform where it matters most — under the hood, on the road, and on the track.