Holley 6-519-2 Inlet Needle Steel
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Steel-tipped inlet needles are necessary when using exotic racing fuels. A .097 in. seat size should be used for small four barrel carburetors; a .110 in. seat size should be used for carburetors up to 735 CFM; larger seat sizes should be used with carburetors 750 CFM and larger. The following steel inlet needle and seat assemblies are available from Holley.