This 4-Bolt collector flange is precision laser-cut from true American made Mild Steel, and is 3/8" thick. These flanges have slot-holes for fine-tuning any header positioning your build may require. It is the perfect fit for any Cobra Kit Car application requiring a 4-bolt flange. The ports are available in 1 3/4" and 2" diameter holes to accompany those sizes of tubing.
