2in x 3' Thermo Sleeve

The 2in x 3' Thermo Sleeve by THERMO-TEC is engineered for serious automotive enthusiasts and mechanics who demand thermal management in engine compartments. Whether you're running high-performance exhaust systems, turbocharger plumbing, or fuel lines in tight underhood spaces, this heat-reflective sleeve protects surrounding components and improves overall engine bay efficiency. Radiant heat from exhaust systems and hot fluid lines can degrade wiring harnesses, fuel systems, and intake manifolds—making thermal protection a practical necessity rather than a luxury modification.

Constructed with THERMO-TEC's proven reflective material technology, the 2in x 3' sleeve uses aluminized outer layers and fiberglass core to reflect radiant energy away from sensitive engine components. The 2-inch diameter accommodates standard hose diameters found on most cooling lines, intercooler piping, and turbo inlet/outlet tubes, while the 3-foot length provides ample coverage for extended runs through the engine bay. This flexible sleeve withstands continuous exposure to under-hood temperatures and resists degradation from oil, coolant, and fuel splatter—critical durability factors in performance builds where component longevity directly impacts reliability.

Professional installers and DIY builders alike rely on this sleeve for turbocharged, supercharged, and naturally aspirated applications where thermal isolation prevents heat soak and maintains cooler intake temperatures. Installation is straightforward—simply slide the sleeve over target hoses or lines before final routing through the engine compartment. The compact 0.34 lbs weight adds negligible mass while delivering measurable thermal benefit, making it ideal for both street cars seeking improved reliability and track builds targeting consistent power delivery across multiple heat cycles.