These new gaskets fit 4160 Series 585 CFM Holley/Mopar 4 barrel carbs with vacuum secondary, 1-9/16" throttle bores and no removable jets in the secondary. List #'s 4217, 4218, 4360, 4368, 4668, 4734, 4735, 4738, 4739, 4749, 6160, 6191, 6193, 6252, 6253, 6254, 6255, 6256, 6257, 6270, 6290, 6515, 6538, 6909, 7009, 8006.