Performance Polished Stainless Steel Exhaust Headers Manifold System Kit 1991-2002 Jeep Wrangler TJ & YJ 2.5L 4-Cylinder Fit: 1991-2002 Jeep Wrangler TJ & YJ 2.5L Inlet Diameter: 1.50". Outlet Diameter: 2.50" Improve Sound, Horsepower & Torque. Mandrel-Bent For Maximum Performance TIG Weld & Polished Stainless Steel. Quality & Affordable Products Gaskets Included. Reuse OEM Bolts