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.

$11.22
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 $15.42
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 $35.93
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 Tube is designed to resist...
As low as $7.39
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...
$137.29
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 $23.92
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 $31.27
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 $23.54
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...
$48.23
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 $60.89
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 $23.07
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 $14.87
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,...
$13.37
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...
$50.37
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...
As low as $32.63
Heat Shroud™ 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...
As low as $12.46
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 $12.14
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 $106.57
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 $0.60
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...
$10.56
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...