Tube Sleeve Adapter -4AN Tube Size 1/4in

The Tube Sleeve Adapter -4AN Tube Size 1/4in from Vibrant Performance is a precision fitting engineered for builders and mechanics who demand reliability in high-performance fuel, coolant, and hydraulic systems. This adapter bridges the critical connection between -4AN hose assemblies and 1/4-inch tube stock, making it indispensable for custom engine bay layouts, turbo kit installations, and fuel system upgrades where space constraints or routing requirements call for mixed fitting standards. Whether you're fabricating a custom fuel line for a naturally aspirated build or integrating braided lines into a turbocharged application, this adapter ensures leak-free performance under pressure.

Manufactured by Vibrant Performance, a leader in automotive fluid transfer solutions, the Tube Sleeve Adapter uses precision machining and quality materials to withstand the rigors of motorsport and street driving. The -4AN designation (which equates to 1/4-inch hose ID) provides a standard reference point across the automotive aftermarket, ensuring compatibility with virtually all -4AN hose fittings, brackets, and manifolds. The 1/4-inch tube interface accommodates hard-line applications where aluminum or steel tubing is preferred, offering superior vibration damping and cleaner engine bay aesthetics compared to full hose runs. The compact form factor—measuring 3.5 inches in length with a minimal 0.45-inch body width—allows integration into tight spaces without compromising flow or system integrity.

This adapter is essential for anyone building or modifying fuel systems, coolant loops, or power steering setups where mixed fitting sizes are unavoidable. Engine builders routinely use tube sleeve adapters to connect manifold blocks with non-standard port sizes to modern hose standards, simplifying both installation and future service. The lightweight design—just 0.01 lbs—contributes nothing to curb weight while delivering the robust connection integrity your system demands. Installation is straightforward: thread the adapter into the tube fitting or block port, then secure your -4AN hose with a standard AN swage fitting. Confirm that tube diameter and -4AN hose specifications match your system pressure rating before assembly.