2.5" GM Truck "House" Flange

This 1/2" thick flange is made from 1018 MS and fully CNC cut to fit the "house" style manifolds (drivers) for the Gen III/GenIV trucks (4.8L, 5.3L, 6.0L, 6.2L). With 2.5" ID it can be used for 2.5" exhaust, or making up-pipes for turbo setups that mate to truck manifolds.