Most Popular Products

DEI Universal Muffler Shield Kit

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$86.05

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...

DEI Protect-A-Boot - 6in - 8-pack - Titanium

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$105.42

Titanium Protect-A-Boots are the latest in thermal protection technology for spark plug boot protectors. Developed from a unique material mined from lava rock, stranded...

DEI Protect-A-Boot - 8in - 8-pack - No Ring - Titanium

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$122.27

Titanium Protect-A-Boots(TM) XL are the latest in thermal protection technology for spark plug boot protectors. Developed from a unique material mined from lava rock...

DEI Protect-A-Sleeve 1in I.D. x 36in - Black Titanium

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$38.81

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...

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

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$19.94

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...

DEI Split Wire Sleeve Easy Loom 10mm-3/8in x 20 Black

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$33.17

Easy Loom(TM) Split Sleeves are a great solution to cleaning up and protecting old wiring, new wiring, lines hoses and more. Protective Easy Loom...

DEI Split Wire Sleeve Easy Loom Master Kit

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$156.63

Everything to protect and restore your factory or aftermarket wire harness from abrasion, chemicals and the elements. 5 different diameter Easy Loom sleeves, Shrink...

DEI Vapor Block Sleeve 3/8in x 36in

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$16.43

Vapor Block(TM) solves the problem of fuel and other fluids boiling from extreme heat and causing a vapor lock situation. Prevent rough idling and...

DEI Oil Filter Heat Shield 3.5in x 4.5in x 4in - 3 Pack

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$13.26

Oil filters soak in a lot of heat from high performance engines. They are nestled tight to the oil pan and engine. DEI's Oil...

DEI Versa-Shield (Starter Shield) 7in x 2ft Universal Heat Shield

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$38.99

Versa-Shield was designed to protect starters from potential failure caused by under hood heat soak conditions. Constructed using an aluminized heat reflective material backed...

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

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$262.76

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...

DEI Heat Sheath GOLD 3/4in x 36in

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$33.29

Heat Sheath GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from...

DEI Heat Sheath GOLD 1-1/4in x 36in

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$41.66

Heat Sheath GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from...

DEI Heat Sheath GOLD 1/2in x 36in

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$30.08

Heat Sheath GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from...

DEI Heat Sheath GOLD 1in x 36in

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$36.69

Heat Sheath GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from...

DEI Heat Screen GOLD 24in x 24in - Non-Adhesive

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$106.44

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...

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

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$91.21

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...

DEI 06-15 Mazda Miata NC Transmission Tunnel Heat Shield Kit

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$147.54

The Miata Transmission Tunnel Heat Shield Kit solves the problem of hot interiors in NC Miata's. Direct replacement for the factory heat shield that...

DEI Form-A-Barrier 12in x 12in

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$24.02

Form-A-Barrier solves the problem of needing a light weight, formable shield to protect components from heat. Light weight, formable, rigid shield provides excellent thermal...

DEI Form-A-Barrier 12in x 24in

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$52.58

Form-A-Barrier solves the problem of needing a light weight, formable shield to protect components from heat. Light weight, formable, rigid shield provides excellent thermal...

DEI Radiator Relief 16 oz.

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$9.97

Radiator Relief(TM) solves the problem of high engine temps by reducing coolant temperatures up to 30 degrees. Radiator Relief is an excellent method of...

DEI Radiator Relief Diesels - 16 oz.

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$9.97

Radiator ReliefÂ(TM) for Diesels supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive...

DEI Radiator Relief Heater Hotter - 16 oz.

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$9.97

Heater Hotter(TM) solves the problem of slow warm up times and waiting for your vehicle to thaw in winter months. Heater Hotter formulated specifically...

DEI Radiator Relief Chill Charger - 16 oz.

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$9.97

Chill Charger for water-to-air intercoolers maximizes thermal transfer to lower air intake temperatures while also protecting core corrosion, electrolysis and harmful mineral build up....

DEI 67-72 Chevrolet/GMC C10 Regular Cab Interior Floor Insulation Kit

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$182.43

Design Engineering is leading the way with the most advanced thermal acoustic kits for vehicle specific applications. Using our proven Under Carpet Lite we...

DEI 07-18 Jeep Wrangler JK Under Hood Liner Kit

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$123.99

Engineered to tackle two major concerns at once, this custom cut, top-quality hood liner not only diminishes engine compartment noise but also effectively protects...

DEI 84-01 Jeep Cherokee XJ Under Hood Liner Kit

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$176.99

Under Hood Insulation Kits are custom cut kits made from our Black Under Hood material. It controls engine heat and noise that is often...

DEI 68-70 LeMans/GTO Under Hood Custom Insulation Kit

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$156.36

Precut on our CNC cutter for a perfect fit our Black underhood insulation kits are the perfect upgrade or replacement for missing or drooping...

DEI 69-74 Chevrolet Nova Pre-Cut Under Hood Insulation Kit

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$59.98

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...

DEI 70-72 Chevrolet Chevelle Base Pre-Cut Under Hood Insulation Kit

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$84.65

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...

DEI Under Carpet Lite Sound Absorption & Insulation - 70in x 24in

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$55.20

Under Carpet Lite solves the problem of engine, exhaust and road heat soaking into interiors. Under Carpet Lite is a superior sound decoupling material...