Tube Sleeves -3 4pk

The Tube Sleeves – 3 4pk from ALLSTAR PERFORMANCE is a precision fitting system designed for high-performance fluid and brake line applications. This four-piece set delivers the critical connection integrity required in racing, custom fabrication, and heavy-duty automotive work where vibration, pressure cycling, and extreme conditions demand reliability. Whether you're building a competition engine bay or restoring a classic vehicle, these tube sleeves provide the structural foundation that prevents line separation and maintains system pressure under stress.

Each sleeve is engineered from steel construction with a zinc oxide finish, offering corrosion resistance and extended service life in both wet and dry environments. The 3 AN (Aircraft National) size accommodates 3/16-inch tubing, a standard specification across fuel, coolant, and brake systems in performance applications. The zinc oxide coating provides superior protection against rust and oxidation while maintaining a low-friction interface, ensuring secure seating without galling or binding during installation. This design approach eliminates the need for secondary sealants while delivering a professional, leak-free connection that meets competition standards.

Fabricators, engine builders, and restoration specialists rely on the Tube Sleeves – 3 4pk for applications requiring multiple connection points—fuel rails, coolant circuits, brake lines, and custom plumbing networks. The four-pack format eliminates repeat orders for typical system builds while maintaining inventory efficiency. Installation is straightforward: slide the sleeve over the tube end, then mate with the corresponding AN fitting for a permanent, vibration-resistant joint. Compatible with any 3/16-inch tubing diameter and standard 3 AN port configurations, this set represents the professional choice for anyone serious about system durability and appearance.