#4 Tube Sleeve Ano-Tuff 2pk

The #4 Tube Sleeve Ano-Tuff 2-pack from Earl's represents a professional-grade solution for protecting and organizing fuel and fluid line assemblies in high-performance automotive applications. Whether you're building a custom engine bay, upgrading a fuel system, or protecting braided hose runs from abrasion and heat, these sleeves provide essential shielding for critical fluid pathways. Designed by Earl's—a trusted name in race-proven fuel systems and plumbing components—this two-piece set delivers reliability in both street and track environments where vibration, temperature cycling, and mechanical contact threaten line integrity.

Each #4 tube sleeve features anodized aluminum construction with the durable Ano-Tuff finish—a hard-coat anodizing process that resists corrosion, oxidation, and wear while maintaining low weight. The compact 0.75-inch outer diameter accommodates standard Earl's #4 hose fittings and tubing, making these sleeves an ideal retrofit for existing fuel systems or new custom builds. The Ano-Tuff anodizing process creates a microscopically rough surface that enhances grip and vibration damping, preventing line movement and reducing noise transmission through the engine bay. This protective barrier also shields braided hoses from UV damage, oil splash, and thermal stress—factors that accelerate hose degradation in performance applications.

Mechanics and fabricators working on fuel system upgrades, EFI conversions, or engine swaps will appreciate the universal fit and professional finish of this two-pack. Installation is straightforward: simply slip the sleeve over your tubing before final assembly, securing it with the included components. The lightweight design—0.01 lbs per pack—adds negligible mass while delivering measurable protection. Ideal for use alongside Earl's complete line of hose, fittings, and fuel delivery components, these tube sleeves are essential for anyone serious about system longevity and reliability in demanding automotive environments.