Rev9Power Rev9_AC-046; Stainless Steel Flange And Gasket For T3T4 Turbocharger; 5 Bolt Product Details 5 bolt standard t3t4 exhaust down pipe flange + gasket " - T-304 Stainless steel with CNC machines - 1/2" thick, 2 3/8 diameter outlet - Perfect for turbo application FITS ALL THE T3 AND T3T4 HYBRID TURBO WITH 5 BOLT STANDARD SIZE OUTLET