Header Inlet / Outlet Size (IN). 1.8" x 1.5" (Oval) / 3.375. For most Small block engines from 265 to 400 cubic inches. TRI-Y SS RACING HEADER/EXHAUST MANIFOLD For 94-01 INTEGRA CIVIC Si B16/18 GS-R.
For Small Block Chevy GMC Heavy Duty Truck 73-85 Header Exhaust Stainless Steel. FOR 330/360/390-428 FORD BIG BLOCK FE STAINLESS SHORTY HEADER EXHAUST MANIFOLD. FOR 00-06 AUDI TT QUATTRO/S3 Mk1 Typ8L 1.8T STAINLESS STEEL EXHAUST PIPE. STAINLESS RACING HEADER/EXHAUST MANIFOLD FOR 85-99 JETTA/GOLF/GTI 1.8/2.0 8V. 4-2-1 FOR 240SX S13 SOHC KA24 2.4 TRI-Y LONG TUBE HEADER EXHAUST MANIFOLD.