Design Engineering Heat Sheath™ Aluminized Sleeving – 1-1/2" ID x 3 ft, High-Temp Heat & Abrasion Protection

Design Engineering Heat Sheath™ aluminized sleeving provides robust protection for hoses, fuel lines, wiring, and fluid lines that face extreme heat and rough handling. Built from a 19 oz high-temperature fiberglass insulation bonded to a durable aluminized outer layer, it reflects radiant heat up to 2000°F while tolerating direct heat up to 500°F. The sleeving is reinforced with aramid fiber thread for added abrasion resistance and long-term durability, and it shields components from oil, fuel, chemicals, dirt, grease, and road debris. It’s designed for quick slip-on installation and is proudly made in the USA. Note: Do not apply directly to exhaust components.

Key advantages at a glance

• EXTREME HEAT & ABRASION PROTECTION – Keeps hoses, fuel lines, wiring, and cables resistant to heat and wear that can lead to premature failure.
• REFLECTS RADIANT HEAT UP TO 2000°F – The aluminized outer layer reflects intense radiant heat while withstanding direct heat up to 500°F, helping maintain cooler operating temperatures.
• PROTECTS AGAINST OIL, CHEMICALS & DEBRIS – Shields lines from oil, fuel, chemicals, dirt, grease, and road grime found in automotive and industrial settings.
• EASY SLIP-ON INSTALLATION – Disconnect, cut to length, slip on, reattach—no special tools required.
• HEAVY-DUTY, FIRE-RESISTANT CONSTRUCTION – 19 oz fiberglass insulation bonded to a durable aluminized outer layer for lasting thermal protection.

What you get

• One heat sheath sleeve sized 1-1/2 in ID by 3 ft long
• 19 oz fiberglass insulation with aluminized outer layer
• Aramid fiber reinforced construction for longevity

Real-world use

In performance builds, repair shops, and industrial settings, Heat Sheath helps keep lines cooler and more flexible under heat soak, reducing potential heat-related wear and downtime. The reflective exterior helps minimize radiant heat absorption around engine bays, headers, and powertrains while the rugged construction stands up to oil, fuel, and grime exposure.

Installation tips

Slip-on installation is designed for ease; cut to length and slide over the target area before reattaching. Avoid direct contact with exhaust components.

Quality you can trust

Proudly made in the USA, Heat Sheath combines engineered insulation with a durable aluminized shell to deliver consistent performance in demanding environments.