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.

$10.89
Aluminum Plug Wire Sheath is constructed from high-temperature rated glass fiber material bonded to a heat reflective aluminized material. Plug Wire Sheaths are an inexpensive alternative for protecting specific areas on both ignition wire and boot...
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 from abrasion, chemicals and the elements. 5 different diameter Easy Loom sleeves, Shrink tube ends, silicone tape, locking ties and electrical tape. Self-closing split design...
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
A high temperature resistant braided glass material, woven into a sleeve and heavily coated with 100% silicone rubber with 304 stainless mesh outer covering, EXO Sleeve provides the ultimate in heat insulation and protection from direct heat up to...
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 thermal insulator sleeve provides the ultimate in heat insulation and protection from direct...
As low as $59.13
Fire Wrap 3000™ thermal insulator sleeve is constructed from the same material as DEI Fire Sleeve™ but with the convenience of a hook & loop edge closure design.  Fire Wrap 3000™ provides the same top quality heat insulation...
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, encapsulating 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 $12.16
Professional grade military spec flexible polyolefin tubing provides excellent electrical insulation, protection from dirt, dust, solvents, and foreign materials as well as providing strain relief. Over expanded tubing easily fits over the end of wires...
As low as $11.79
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...
As low as $103.47
25 ft. of Black Silicone with numbered shrink tube ends to label plug wires to the correct cylinder. Annealed Fiberglass sleeve is coated with Silicone providing excellent resistance to abrasion, fraying and punctures. Resistant to chemicals and...
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...
$13.04
High performance Quick Fix Tape bonds to itself and is self-curing, forming a waterproof permanent seal. It's ideal for emergency hose repair, non-slip grip surface for tools, electrical splices and connections, serves as a temporary leak sealer, and...
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...