JBA 1674S-1 1-1/2" Shorty Stainless Steel Exhaust Header for Ranger/Explorer 4.0L SOHC Mandrel bent stainless steel tube Patented JBA Firecone collector Factory style emission connections, Tube Size:1 1/2" Extra thick collector domes 3/8 inch thick CNC laser-cut flanges with oversized exhaust ports