Vibrant 4 into 1 SS Turbo Mani Collector for All T4 in Flange 48mm Pipe OD 4.75in tall 78mmx64mm outVibrant Performance Turbo Manifold Merge Collectors are constructed from 304 Stainless Steel Schedule 10 pipe. Each component is precision 3D laser cut to create a tight fitment and assemblies are tack welded for ease of adjustability. Available in 4 into 1 and 6 into 1 configurations. 4 Into 1 Turbo Manifold Merge Collector; 1. 875 in. Pipe OD; 4. 75 in. Collector Height; 3. 063x2. 5 in. Collector Outlet Dimensions; For All T4; 4 Up Style; Tack