1/4" Phenolic Insulator kit 1957-58 It has the original shape

It has the original shape and design

This will work for the 1959-1965 center carbs

meaning they retain their original patina

It connects to the top of the front fuel block and allows for clearance for the Ram air pan

New bases are fitted with new shafts

1/4" Phenolic Insulator kit 1957-58 It has the original shapeThis kit also fits the popular 348s, and Olds J 2 as well as the Early Pontiac's. If your tripower has three small Rochester carbs, this fits. Kit includes three precision cut insulators, set of 12 studs and new, plated nuts. Studs are made for this application not a generic piece. Studs have the correct 5 16 18 threads into intake and 5 16 24 up on top. Kit includes 6 gaskets, which you will need. Solves issues with fuel boiling in the bowls,