"Steel-tipped" inlet needles are necessary when using exotic racing fuels. A .097" seat size should be used for small four barrel carburetors; a .110" seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger.
- Compatable with alcohol or when using benzine or acetone additives
- Adjustable
- Steel inlet needle
- Genuine Holley quality part