When it comes to line and hose protection Design Engineering has you covered. With a variety of styles of sleeves like our Heat sheath, Heat Shroud, Gold and Vapor Block sleeves that reflect heat for any application. We also have a full line of insulating and abrasion protective sleeves and looms like our Easy loom, Fire sleeve and wrap to our Exo sleeves. Everything needed to keeps things cool and protected.

As low as $14.98
Able to reflect continuous heat up to 750°F while offering a quality profession look, Cool Tube Extreme™ is flexible enough to conform to tight bends and provide superior protection against extreme under hood temperatures, weather conditions...
As low as $34.88
Designed to provide the ultimate thermal protection from damaging heat, Cool Tube™ is designed to resist abrasions, contaminates, and condensation. Cool Tube™ is covered with a heat resistant glass fiber fabric and pre-slit lengthwise...
$133.29
Everything to protect and restore your factory or aftermarket wire harness. 5 different diameter Easy Loom sleeves, Shrink tube ends, silicone tape, locking ties and electrical tape. Self-closing split design with 30% overlap Peak temp rating 347 F -...
As low as $23.23
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 Easy...
As low as $30.36
Stainless Steel Mesh over silicone sleeve - EXO Sleeve™ Kit 3/8in x 3'
As low as $22.85
Constructed from a high temperature resistant braided glass material, woven into a sleeve and heavily coated with 100% iron oxide silicone rubber, Fire Sleeve provides the ultimate in heat insulation and protection from direct heat up to 500°F. Each...
As low as $59.13
Constructed from the same material as Fire Sleeve but with the convenience of a hook & loop edge closure design. Simply wrap Fire Wrap 3000™ around wires, cables or hoses without the need of disconnecting.
As low as $22.40
DEI Heat Sheath GOLD™™ is manufactured from our high temperature Metalized Polyimide lamination, bonded to a robust 20oz. heat treated glass fiber base material, the DEI line of GOLD™ sleeving will protect and keep components cool in the most...
As low as $14.44
Designed to slide over wires, cables and hoses, Heat Sheath™ provides the ultimate protection from extreme heat as well as chemical and oil spills, dirt, grease and road grime. Constructed from a high temperature fabric and bonded to an aluminized...
$13.05
Shrink tube with adhesive is a flexible, flame-retardant heat shrinkable polyolefin tubing, with a thick wall modified adhesive which melts and flows, encapsilating and sealing components inside. Recommended for applications that require water proofing...
$48.90
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 most demanding applications. Able to reflect radiant heat up to...
As low as $31.68
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 & loop closure design along the open edges. Without the need of removing one end of...
As low as $11.79
Protect expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wire by removing distributor boot and sliding Protect-A-Wire™ over spark plug wire.
As low as $103.47
25 ft. of Black Silicone with numbered shrink tube ends to label plug wires to the correct cylinder. Kit includes: 25’ of 3/8” id Silicone covered Annealed Fiberglass Sleeve 8 DEI branded high heat shrink tube ends 8 Numbered 1-8 high temp shrink tube...
As low as $30.93
Protect expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wire by removing distributor boot and sliding Protect-A-Wire™ over spark plug wire. Buy in bulk...
$10.25
DEI Fuel Line Cover Kit is a safe and easy way to make sure you pass technical inspection for any USAC - 1/4 Midget Race. Meets USAC requirements for fireproof fuel line cover as stated in current rule book Includes 1-1/2' of 3/8" ID silicone covered...
As low as $29.74
Light weight and flexible the DEI TIG Torch Cover protects expensive cables while not feeling heavy or cumbersome. Made from PET monofilament and multifilament combination it provides exceptional abrasion and chemical resistance. Able to handle...
As low as $27.73
DEI’s new Titanium Protect-A-Sleeve™ with LR Technology™ offers the best possible sleeve protection on the market today. Developed specifically for any application where extreme high heat is present, these Titanium™ sleeves will protect wires, lines and...
As low as $22.08
Light weight aluminum impregranated glass fiber sleeve. 1200 degree radiant heat rating. Light and flexible
$18.30
Vapor Block™ is a line sleeving specifically developed to prevent vapor lock in fuel systems. Its excellent thermal effectiveness comes from glass fiber and polyester laminated to an aluminum outer layer. Split design with adhesive flap. 13mm...