Heat Sleeve 1/2in x 10' Black

The THERMO-TEC Heat Sleeve 1/2in x 10' Black (MPN 18050-10) is a high-temperature protective sleeve designed to shield hoses, wiring, and fuel lines from radiant engine heat in automotive and motorsport applications. This 10-foot length of silicone/fiberglass composite construction provides reliable thermal insulation in demanding underhood environments where standard hose routing exposes components to excessive heat.

The 1/2-inch inner diameter accommodates standard fuel lines, brake lines, and electrical harnesses common in street rods, race cars, engine swaps, and turbocharged builds. The silicone/fiberglass composite blend balances flexibility with heat resistance, allowing the sleeve to bend around tight engine compartment routing while maintaining structural integrity under sustained high-temperature exposure. The black exterior resists UV degradation and blends seamlessly with modern engine bays. At 0.89 lbs, the full 10-foot spool is lightweight enough for weight-conscious builders while providing substantial coverage for a complete fuel system or harness run.

This product serves mechanics, fabricators, and enthusiasts working on high-performance vehicles where heat management is critical to component longevity and safety. Drag racers, street rod builders, and engine builders rely on heat sleeve protection to prevent fuel line degradation, wiring insulation failure, and brake fluid breakdown caused by proximity to exhaust manifolds, turbo housings, and cylinder heads. The 10-foot length provides flexibility to protect multiple lines in a single purchase or to reserve additional footage for future modifications.

THERMO-TEC heat sleeves are industry-standard in motorsport fabrication and are compatible with any 1/2-inch OD hose or bundle of smaller-diameter lines. Installation is straightforward—simply slide the sleeve over the hose before final routing and secure with heat-resistant clamps or adhesive wrap if needed. The material remains flexible during installation and hardens under operating heat, creating a protective barrier that extends component life and maintains system reliability under extreme conditions.