Product details:
Header Flanges, No Stubs, Steel, 0.313 in. Thick, 2.000 in. Port, Gaskets, Bolts, Pair UPC: 694342512040 Header Bolt Pattern: Stock Header Flange Material: Steel Header Flange Thickness (in): 0.313 in. Header Flange Port Shape: Oval Header Flange Port Size (in): 2.000 in. Includes Stubs for Primary Tubes: No Gaskets Included: Yes Mounting Hardware Included: Yes Quantity: Sold as a pair. Notes: 1 5/8 in.-1 3/4 in. tube diameter.