Turbo Oil /Water Line Feed Drain Fitting Line Kit For RB20/25DET RB20 RB25 240SX Skyline S13 S14 CXRacing Turbo Oil /Water Line Kit For Nissan RB20DET or RB25DET Motor. This Turbo Oil /Water Line Kit is Desinged for Single Turbo Upgrade for RB20/25DET. Stock RB20/25 Turbo Uses Banjo Oil and Water Feeds, But Many Bigger Turbo Does NOT Use the Same Setup. This Kit Converts Oil Feed to AN4 and Caps Water Port. Caps/Blocks the Water Outlet (Aluminum Cap with O-Ring) Converts the Oil Line Output Port to AN-4 Fitting, which is Commonly Used in Many Turbos. Comes with Common Turbo Oil Feed AN-4 Fitting and Drain Flange (Make Sure to Check your Turbo Oil Feed/Drain Provision, to Match the Flange Sizes Shown on Pictures Below, Otherwise They Won't Fit) AN4 Oil Feed Line and AN10 Oil Drian Line