Features: 1. Fitment: Oil Rail Adapters is fit for Fo-rd 6.0L diesel turbocharged engines. 2. Premium Materials: Oil Rail Adapters Kits is made of top quality solid brass, that with excellent mechanical and physical properties, smooth surface, durable corrosion resistance. 3. Advantages: Both adapters are apply to standard 1/4" NPT air hose, which allow observation of the High Pressure Oil System's Injector Control Pressure (ICP) by direct gauge connection, and facilitate testing of High Pressure Oil System for leaks. .