Heat Sheath 1.5in ID x 50ft

The DESIGN ENGINEERING Heat Sheath 1.5in ID x 50ft is a high-temperature hose and wire protection sleeve designed to shield critical engine components from radiant heat and flame exposure. This aluminum and fiberglass composite sleeve provides reliable thermal protection in engine bays, exhaust zones, and transmission tunnels where sustained heat can degrade fuel lines, brake lines, wiring harnesses, and fuel injector systems.

The 1.5-inch inner diameter accommodates standard fuel hoses, transmission cooler lines, and bundled wiring harnesses common in street performance and racing applications. The 50-foot spool length supplies enough material for extensive engine bay routing, custom harness fabrication, or multiple vehicle builds. The aluminum and fiberglass construction reflects radiant heat while resisting direct flame contact—a critical advantage in turbo installations, high-output carburetor setups, or vehicles running modified exhaust manifolds where underhood temperatures regularly exceed 300°F. The silver finish integrates cleanly into stock or custom engine compartments while maintaining visibility for routing adjustments.

This sleeve serves street rodders, turbo builders, drag racers, and engine bay customizers who need to protect fuel delivery and electrical systems from thermal damage without relocating components. It's equally effective in marine and industrial applications where heat exposure is concentrated and consistent. The per-foot flexibility allows custom sizing for tight spaces around headers, intercoolers, and aftermarket fuel rails.

Heat management in high-performance automotive work directly impacts fuel system reliability and electrical integrity. Rather than rerouting lines or investing in expensive remote-mounted components, many builders use thermal sleeves to extend the service life of OEM and performance parts. The Heat Sheath represents a proven, cost-effective approach to underhood heat protection that remains standard across professional shops and serious enthusiast builds.