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.

$251.82
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...
$345.19
Black Titanium™ 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™ offers the best...
$621.47
Black Titanium™ 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™ offers the best...
$782.62
Black Titanium™ 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™ offers the best...
As low as $346.09
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...
010406 - Cool Tube
$806.41
SOLD OUT - DISCONTINUED ITEM Cool Tube™ solves the problem of needing a semi-rigid, cost effective tubing to protect lines, hoses & wires from heat and abrasions. Designed to provide the ultimate thermal protection from damaging heat, Cool...
$395.01
DEI now offers a great way to add additional protection to exposed wire looms, hoses, and cables. Our Protective Split Sleeve features a clean, classy look and can preserve sensitive parts from abrasion and the elements. Heat and solvent resistant, the...
$179.33
Line sleeving is great protection for wires, lines, cables & hoses. But inserting them into the sleeving can be frustrating and time consuming. DEIs line sleeve tool is designed to keep sleeving open while simultaneously inserting the wires, lines or...
$165.86
Line sleeving is great protection for wires, lines, cables & hoses. But inserting them into the sleeving can be frustrating and time consuming. DEIs line sleeve tool is designed to keep sleeving open while simultaneously inserting the wires, lines or...
$3,081.34
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 $536.86
Easy Loom™ Split Sleeves are a great solution to cleaning up and protecting old wiring, new wiring, lines hoses and more. Protective Easy Loom offers a clean, classy way to protect exposed wires, cables and hoses on trucks, SUV's and powersport...
As low as $701.82
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 $528.33
Fire Sleeve solves the problem of heat and abrasions damaging fuel, transmission and brake lines and is a fireproof solution. Constructed from a high temperature resistant braided glass material, woven into a sleeve and heavily coated with 100% iron...
$1,082.47
Fire Tape is a multi use self-fusing tape that can be used to cover wires, seal temporary leaks, and much much more. Made of a non-adhesive silicone rubber, Fire Tape is waterproof, remains flexible, and does not leave a sticky residue after removal...
As low as $1,366.62
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 $517.78
Heat Sheath GOLD™ solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from our high temperature metalized polyimide lamination, bonded to a robust 20oz. heat treated glass...
As low as $333.74
Heat Sheath™ solves the problem of heat and abrasions causing failure of lines, hoses & wires. Designed to slide over wires, cables and hoses, Heat Sheath provides the ultimate protection from extreme heat as well as chemical and oil spills,...
$300.08
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...
$1,130.50
Heat Shroud GOLD™ 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...
$1,839.29
Heat Shroud GOLD™ 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...