Vibrant 4 Ply Aramid Reducer Coupling 4.5in Inlet x 5in Outlet x 3in Length - Black - 2929 308 Made from the same material

Made from the same material as the TF-600 SHEETHOT(TM) heat shield (6 layer dimpled Aluminum)

Radium Engineering 10AN ORB to 3/8in SAE Male

Garrett GT4718

as well as an internal Allen key hex for hassle-free installation

Vibrant 4 Ply Aramid Reducer Coupling 4.5in Inlet x 5in Outlet x 3in Length - Black - 2929 308 Made from the same materialVibrant Performance Aramid Reinforced Silicone Transition Hose Couplers feature a smooth and effective transition from one inlet diameter size to another. This coupler is intended for use in applications where a reduction or increase in diameter is needed. Our Transition Hose couplers are commonly found off of turbo compressor housings, intercooler end tanks and charge pipe assemblies.