Turbo Oil Supply Adapter Port M16-1.5 to -4AN

The Turbo Oil Supply Adapter Port M16-1.5 to -4AN by ICT BILLET is a precision-engineered fitting designed for high-performance turbocharger oil feed systems. This adapter bridges the gap between metric port threads and AN (Army-Navy) line standards, making it essential for custom turbo installations, engine swaps, and standalone turbo kit builds where OEM port configurations don't match your chosen plumbing system.

Manufactured from billet aluminum, this M16-1.5 to -4AN converter features precision-machined threads on both ends for zero leakage and consistent sealing. The M16-1.5 metric port accepts the turbo's factory oil supply boss, while the -4AN outlet integrates seamlessly with standard -4 (1/4-inch) AN hose and fitting systems commonly used in performance plumbing. The compact design minimizes packaging concerns in tight engine bays, and the billet construction resists thermal cycling and maintains dimensional stability under sustained boost and heat cycles typical of forced-induction applications.

This adapter is ideal for mechanics and enthusiasts building twin-turbo conversions, upgrading aging turbocharger cores on high-mileage engines, or retrofitting alternators. Its reliable oil delivery ensures optimal performance for your turbo's bearings, making it a crucial component for any turbocharged setup.