159064 190003
37-119 37-720 37-754 37-1542
For Holley 4160 Series Vacuum Secondary Carbs 570, 600, 650, 670, 750 & 770 cfm
For Holley List Numbers 1850, 3310, 8007, 9015, 9776, 80457, 80508, 80570, 80670 & 80770
390-750 1841849, 6619, 6909, 8007, 9834,80463,80529