DEI

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225 products
DEI Speaker Baffles 5.25in Round 6.5in Wide 6.5 Height 2.5in Deep Pair
REGULAR STOCK
SALE
DEI
$8.13
$11.83

DEI Speaker Baffles 5.25in Round 6.5in Wide 6.5 Height 2.5..

Boom Mat Speaker Baffles solve the problem of rattles and vibrations caused by speakers and protects the back of speakers from damage. Boom Mat Speaker Baffles maximize speaker performance by isolating the correct frequency responses while damping reverberation in the sheet metal and panel to frame resonance. Also forms a..
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DEI 11-18 Jeep Wrangler JK 2-Door Boom Mat Complete Headliner Kit - 6 Piece - Black
REGULAR STOCK
SALE
DEI
$316.93
$461.18

DEI 11-18 Jeep Wrangler JK 2-Door Boom Mat Complete Headli..

Riding in a Jeep(R) is great fun except for the truck's propensity for interior noise that makes it difficult to engage in conversations or even enjoy vehicle audio systems. Now there is an easy solution. Boom Mat's new Jeep(R) Wrangler Sound Deadening HeadLiner provides a simple pre-shaped peel and stick..
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DEI Boom Mat Damping Material - 12-1/2in x 24in (2mm) - 20.8 sq ft - 10 Sheets
REGULAR STOCK
SALE
DEI
$113.80
$165.58

DEI Boom Mat Damping Material - 12-1/2in x 24in (2mm) - 20..

Boom Mat Damping Material solves the problem of noise, vibrations, squeaks and rattles that come from roads, stereos, engines & more. Boom Mat Vibration Damping Material is a premium quality damping material providing extreme noise damping for the most demanding commercial and sound competition applications. Interior panels vibrate and generate..
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DEI ATAC (Advanced Thermal Acoustic Coating) Paint Spray Gun & Canister
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SALE
DEI
$35.32
$51.41

DEI ATAC (Advanced Thermal Acoustic Coating) Paint Spray G..

Durable pneumatic air gun that's perfect for applying ATAC and other general purpose coatings.
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DEI ATAC (Advanced Thermal Acoustic Coating) - 1 Gallon
REGULAR STOCK
SALE
DEI
$120.61
$175.49

DEI ATAC (Advanced Thermal Acoustic Coating) - 1 Gallon

ATAC coating is designed to transform the interior of your vehicle into an oasis of comfort. Say goodbye to the discomfort of excessive heat and annoying noise, and say hello to a serene, cool, and quiet ride!
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DEI 18-23 Jeep Wrangler JL 4-Door Boom Mat Headliner - 9 Piece - Black
REGULAR STOCK
SALE
DEI
$302.03
$439.49

DEI 18-23 Jeep Wrangler JL 4-Door Boom Mat Headliner - 9 P..

Riding in a Jeep(R) is great fun except for the truck's propensity for interior noise that makes it difficult to engage in conversations or even enjoy vehicle audio systems. Now there is an easy solution. Boom Mat's new Jeep(R) Wrangler Sound Deadening HeadLiner provides a simple pre-shaped peel and stick..
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DEI 68-69 Chevrolet Chevelle Pre-Cut Under Hood Insulation Kit
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SALE
SOLD OUT
DEI
$56.12
$81.66

DEI 68-69 Chevrolet Chevelle Pre-Cut Under Hood Insulation..

DEI Hoodliner Insulation Kits are custom cut kits made from our Black Under Hood(TM) material. It controls engine heat and noise that is often a problem with today's modified vehicles packed with high performance components. These pre-cut hood insulation kits are the perfect replacement for your worn out, dirty hood..
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DEI Under Carpet Lite Sound Absorption & Insulation - 70in x 24in
REGULAR STOCK
SALE
DEI
$37.94
$55.20

DEI Under Carpet Lite Sound Absorption & Insulation - ..

Under Carpet Lite solves the problem of engine, exhaust and road heat soaking into interiors. Under Carpet Lite is a superior sound decoupling material for those hard to cover areas like door liners, rear decks, headliners and more. Under Carpet Lite, (UC Lite) is a 1/2 in. thick multi-layer, high..
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DEI 70-72 Chevrolet Chevelle Base Pre-Cut Under Hood Insulation Kit
REGULAR STOCK
SALE
DEI
$58.18
$84.65

DEI 70-72 Chevrolet Chevelle Base Pre-Cut Under Hood Insul..

DEI Hoodliner Insulation Kits are custom cut kits made from our Black Under Hood(TM) material. It controls engine heat and noise that is often a problem with today's modified vehicles packed with high performance components. These pre-cut hood insulation kits are the perfect replacement for your worn out, dirty hood..
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DEI Radiator Relief Diesels - 16 oz.
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DEI Radiator Relief Diesels - 16 oz.

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DEI
$6.85
$9.97

DEI Radiator Relief Diesels - 16 oz.

Radiator Relief(TM) for Diesels supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature up to 30F degrees and reduce engine wear that occurs during extreme heat. NEW Radiator Relief for Diesels is also formulated..
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DEI Heat Shroud Gold 2in to 2.5in x 36in
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SALE

DEI Heat Shroud Gold 2in to 2.5in x 36in

MPN:
DEI
$62.68
$91.21

DEI Heat Shroud Gold 2in to 2.5in x 36in

Heat Shroud GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses and wires without the need to disconnect them. High temperature metalized polyimide lamination, bonded to a robust 20oz heat treated glass fiber base material, Heat Shroud GOLD will protect and keep components cool in the..
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DEI Heat Screen GOLD 36in x 40in - Non-Adhesive
REGULAR STOCK
SALE
DEI
$180.57
$262.76

DEI Heat Screen GOLD 36in x 40in - Non-Adhesive

Heat Screen GOLD(TM) solves the problem of heat from engines and exhaust intruding into interiors and components. Manufactured from our high temperature metalized polyimide lamination, bonded to a robust 20oz heat treated glass fiber base material, Heat Screen GOLD is a reflective heat protection barrier that will protect and keep..
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DEI 11-18 Can-Am Commander Heat Shield Kit
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DEI 11-18 Can-Am Commander Heat Shield Kit

MPN:
DEI
$210.39
$306.15

DEI 11-18 Can-Am Commander Heat Shield Kit

The Can-Am(R) Commander(TM) is a popular choice among UTV enthusiasts for its sporty performance and aggressive power delivery. But the mid-engine mounted Commander(TM) is prone to heat build-up in the cockpit. This is especially true during slow running conditions or when a roof and windshield are installed. DEI now offers..
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DEI Heat Shroud 16 AN x 36in
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DEI Heat Shroud 16 AN x 36in

MPN:
DEI
$33.01
$48.03

DEI Heat Shroud 16 AN x 36in

Heat Shroud(TM) solves the problem of heat and abrasions causing failure of lines, hoses and wires without the need to disconnect them. Heat Shroud is made from a high temperature rated glass fiber fabric with an aluminized outer facing. Same as Heat Sheath but with the added convenience of hook..
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DEI Split Wire Sleeve Easy Loom 25mm-1in x 10 Black
REGULAR STOCK
SALE
DEI
$27.47
$39.97

DEI Split Wire Sleeve Easy Loom 25mm-1in x 10 Black

Protective Easy Loom Split Sleeves offer a clean, classy way to protect exposed wires, cables and hoses on trucks, SUV's and powersport vehicles including ATVs and UTVs. Superior in style and function to simple plastic tubing, DEI's Split Sleeve adds a superior level of protection to sensitive wires cables and..
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DEI Split Wire Sleeve Easy Loom 16mm-5/8in x 12 Black
SPECIAL ORDER
SALE
SOLD OUT
DEI
$18.89
$27.48

DEI Split Wire Sleeve Easy Loom 16mm-5/8in x 12 Black

Protective Easy Loom Split Sleeves offer a clean, classy way to protect exposed wires, cables and hoses on trucks, SUV's and powersport vehicles including ATVs and UTVs. Superior in style and function to simple plastic tubing, DEI's Split Sleeve adds a superior level of protection to sensitive wires cables and..
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DEI Protect-A-Wire 8 Cylinder - Blue
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DEI Protect-A-Wire 8 Cylinder - Blue

MPN:
DEI
$36.89
$53.68

DEI Protect-A-Wire 8 Cylinder - Blue

DEI Protect-A-Wire kits provide thermal protection for expensive spark plug wire sets. Protect your wires from potential burning, cracking, and hardening typically caused by severe under hood heat. DEI wire heat protection kits easily install by removing the distributor boot and sliding Protect-A-Wire(TM) over spark plug wire. Constructed from high..
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DEI Protect-A-Sleeve 1/2in ID x 3ft Universal - Titanium
REGULAR STOCK
SALE
DEI
$13.70
$19.94

DEI Protect-A-Sleeve 1/2in ID x 3ft Universal - Titanium

Black Titanium(TM) Protect-A-Sleeve solves the problem of burning, cracking plug wires, lines & hoses from engine & exhaust heat, now in a stylish black finish. DEI's Black Titanium Protect-A-Sleeve with LR Technology(TM) offers the best possible line sleeve protection on the market. Developed specifically for any application where extreme high..
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DEI Universal Muffler Shield Kit
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DEI Universal Muffler Shield Kit

MPN:
DEI
$59.13
$86.05

DEI Universal Muffler Shield Kit

Muffler Shield Kit solves the problem of heat soak into interiors and components from mufflers that are close to floors. The Best muffler shield/wrap on the market. Based off our proven Floor and Tunnel II heat shield, our new Muffler Shield is designed to wrap around just about any size..
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DEI Gen-3 Turbo Shield T3 - Shield/Blanket - Onyx
REGULAR STOCK
SALE
SOLD OUT
DEI
$257.62
$374.87

DEI Gen-3 Turbo Shield T3 - Shield/Blanket - Onyx

We raised the bar. The most technologically advanced turbo shield ever! We incorporated all our experience to build the absolute best turbo shield on the market. By developing advanced textiles and diving deep into what is needed to control turbo heat, we developed the GEN-3 Onyx Black Turbo Shield. A..
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DEI

225 products

Design Engineering, Inc. (DEI) is a leading manufacturer and distributor of high-quality heat and sound control products for the automotive, industrial, agricultural, powersports, and marine industries. They are renowned for their innovative designs, premium materials, and unwavering commitment to delivering exceptional performance and long-lasting durability.

DEI's diverse product range includes:

    • Heat Shields and Barriers: Protect your vehicle's critical components and interior from excessive heat with DEI's reflective heat shields and barriers. These products are designed to reflect radiant heat and reduce overall engine bay temperatures, leading to improved performance, increased efficiency, and enhanced component lifespan.

    • Sound Deadeners and Insulation: Reduce unwanted noise and vibration within your vehicle with DEI's sound deadening materials and insulation. Their products are designed to absorb and dissipate sound waves, creating a quieter and more comfortable driving experience.

    • Underhood Liners: Protect your engine bay from dirt, debris, and extreme weather conditions with DEI's underhood liners. These liners are constructed from durable materials and designed to maintain a clean engine bay, improve airflow, and prevent heat buildup.

    • Exhaust Wraps and Heat Tape: Manage exhaust heat and improve engine performance with DEI's exhaust wraps and heat tape. Their heat-resistant materials help to retain exhaust heat within the pipe, improving exhaust scavenging and providing additional protection for nearby components.

    • Air Intake Systems and Filters: Enhance your engine's performance and efficiency with DEI's high-flow air intake systems and cold air filters. These products are designed to deliver increased airflow, improve combustion, and maximize horsepower and torque.

    • Electrical Wiring Protection: Protect your vehicle's electrical wiring from heat, abrasion, and damage with DEI's heat-resistant sleeving and conduit. Their products offer superior protection and ensure the safe and reliable operation of your electrical system.

    • Specialty Products: DEI also offers a range of specialty products, including NVH (noise, vibration, and harshness) solutions, fire blankets, and heat shield adhesives, to cater to specific needs and applications.

Strengths and Reputation:

    • Unwavering Commitment to Quality: DEI prioritizes quality throughout its entire manufacturing process, utilizing premium materials, advanced engineering, and rigorous testing procedures to ensure the exceptional performance and long-lasting durability of their products.

    • Extensive Industry Expertise: With over 25 years of experience, DEI possesses in-depth knowledge and expertise in heat and sound control technology, allowing them to offer innovative and effective solutions for various applications.

    • Proven Performance: DEI's products are rigorously tested and proven to deliver significant reductions in heat and noise levels, leading to improved performance, increased efficiency, and enhanced comfort.

    • Diverse Product Portfolio: Their wide range of products caters to various vehicle types, performance goals, and budgetary needs, ensuring you can find the perfect solution for your specific requirements.

    • Customer-Centric Approach: DEI provides excellent customer support, offering technical assistance, installation guides, and a knowledgeable support team to assist you throughout your purchase and installation process.

Design Engineering, Inc. is your trusted partner for controlling heat and sound within your vehicle. Their commitment to quality, extensive industry expertise, and proven performance make them a leading choice for anyone seeking to improve their vehicle's performance, comfort, and overall driving experience.