Design Engineering Heat Shroud aluminized heat protection sleeve 1/2"–1.25" ID x 3 ft — 19 oz fiberglass, hook-and-loop

DEI Heat Shroud is an aluminized, hook-and-loop sleeve that protects hoses, lines, wires, and air intakes from extreme radiant heat and abrasion without disconnecting components.

This 3-foot Heat Shroud from Design Engineering (DEI) combines a heavy 19 oz fiberglass insulation core with a reflective aluminum outer skin and aramid-reinforced stitching. It’s engineered to reflect intense radiant heat, resist chafing, and remain flexible for installations in tight engine bays, racecars, industrial equipment, and custom builds. The adjustable hook-and-loop closure lets you wrap and secure the sleeve quickly around existing plumbing or wiring runs.

How does this sleeve block heat and protect components?

The aluminized outer layer reflects a large portion of radiant heat away from the covered item, while the dense fiberglass inner insulation reduces conducted heat transfer. Together they lower surface temperatures and extend service life of vulnerable hoses and wiring without adding bulk that hinders routing.

• Reflects radiant heat up to extremely high temperatures due to aluminized face
• 19 oz high-temp fiberglass core limits heat conduction
• Aramid fiber stitching increases abrasion and flame resistance
• Maintains flexibility for bends and confined spaces

Can I install it without disconnecting lines or hoses?

Yes. The sleeve uses a full-length hook-and-loop closure so you can wrap it around installed hoses, fuel lines, brake lines, or wiring. No cutting of lines or rerouting is necessary for typical applications, saving time and lowering the chance of installation errors.

• Tool-free wrap-and-secure hook-and-loop design
• Cut-to-length installation for custom runs or multiple segments
• Speedy retrofit on already-installed components

What sizes and applications will this 1/2"–1.25" ID sleeve fit?

This specific sleeve is sized to wrap hoses and lines with inside diameters from about 1/2" to 1.25"; its flexible construction lets it conform to fittings and bends while still covering the full length. It’s suitable for coolant lines, oil hoses, braided fuel lines, wiring looms, and intake plumbing in both street and racing environments.

• Fits nominal inner diameters from 0.5" up to 1.25" comfortably
• 3-foot length allows coverage of single runs or multiple short sections
• Works on automotive, motorsport, marine, and industrial equipment

How durable is the construction and what maintenance is required?

Built with heavy fiberglass insulation and a durable aluminized exterior, the Heat Shroud resists abrasion and stands up to repeated thermal cycles. Aramid-reinforced thread reduces fraying and improves longevity; periodic inspection for tears or compromised hook-and-loop closure is recommended in harsh service environments.

• Heavy 19 oz fiberglass for long-term thermal performance
• Aramid stitching resists abrasion and extends lifespan
• Aluminized outer layer tolerates high radiant temperatures
• Simple visual inspections keep protection effective over time

Who this is for: Technicians, fabricators, racers, and vehicle owners who need a professional-level thermal barrier that installs quickly on existing plumbing and wiring. If you work on engine bays, turbo systems, or any application where radiant heat and chafing threaten hoses and electrical runs, this DEI Heat Shroud provides a durable, adjustable solution made in the USA.