3an X 3/16in Sleeve-Blue

The 3AN X 3/16in Sleeve-Blue from Nitrous Oxide Systems is a precision tube fitting sleeve engineered for high-performance fuel and nitrous delivery systems. Built for automotive enthusiasts who demand reliability in forced-induction and nitrous oxide applications, this fitting component ensures leak-free connections under extreme pressure and temperature conditions. Whether you're building a dedicated drag racing fuel system or retrofitting a nitrous kit to an existing engine platform, the proper sleeve fitting is fundamental to system integrity and safety.

Constructed from lightweight aluminum with blue anodized finish, the 3AN X 3/16in sleeve delivers corrosion resistance and durability in engine bays exposed to heat cycling and moisture. The 3 AN (3/16-inch outer diameter) specification accommodates standard -3 AN hose and tubing widely used in performance fuel systems, while the aluminum construction keeps overall weight minimal—critical in weight-sensitive competition builds. The anodized coating not only protects against oxidation but provides clear visual identification of the hose size within complex system layouts, reducing installation error on tight timelines.

This fitting sleeve is essential for anyone assembling or servicing nitrous oxide delivery systems, EFI fuel injection upgrades, or custom fuel lines on modified engines. Mechanics and tuners rely on NOS components for OEM-quality fitment and repeatable pressure ratings that handle boost and nitrous pulse without creep or separation. Proper installation requires mating with corresponding -3 AN male and female connectors; the sleeve itself slides over the tube end before crimping or swaging, creating a sealed interface rated for system pressures typical of street and competition applications.