#4 Tube Sleeve Black

The #4 Tube Sleeve Black by FRAGOLA is a critical component for any serious automotive builder or mechanic working with hydraulic or fuel line systems. This sleeve protects hose assemblies in high-vibration engine bays and transmission tunnels where friction and abrasion can compromise line integrity. Whether you're building a performance street machine, a race car, or restoring a classic with modern fuel injection, tube sleeves prevent premature hose failure by isolating lines from sharp edges, heat sources, and chassis components. FRAGOLA's reputation in the motorsports community stems from precision engineering and real-world reliability under extreme conditions.

Manufactured from durable, heat-resistant material, the #4 Tube Sleeve Black features a compact profile (measuring 4.2 inches in length) that fits snugly around #4 hose sizes—the industry standard for mid-range fuel and brake applications. The black finish resists UV degradation and blends seamlessly with modern engine bay aesthetics while maintaining functionality in temperatures encountered during prolonged driving. The lightweight design (0.01 lbs) adds negligible weight to your system while providing abrasion protection that extends hose lifespan by years. Installation is straightforward: simply slide the sleeve over your hose before final assembly, and it stays securely in place without additional fasteners.

Professional mechanics, custom fabricators, and DIY enthusiasts building fuel-injected engines or upgrading brake systems will find the #4 Tube Sleeve Black essential for long-term durability. It's particularly valuable in tight engine compartments where hoses must route past exhaust manifolds, belts, or radiator fans—environments where unprotected lines fail prematurely. This sleeve pairs seamlessly with FRAGOLA's complete line of hose fittings and adapters, making it a logical choice for builders standardizing on quality components. For anyone serious about vehicle reliability and performance, proper hose protection through sleeves like this one separates amateur builds from professional-grade installations.