304 Stainless Steel, 1/2" thick. Sold in pairs of 2, pick between 12 Valve or 24 Valve versions. These bolt to the stock cast manifolds. Great for making that “Y” type Turbo manifold. 24 Valve version, fits both 2.8 and 3.2 manifolds.

Pick bore size: 1.625” for Weld Els or 2” for making down pipes