These Radium Engineering gaskets press into the intake manifold ports and seal to the cylinder head. They are compatible with many B58TU engines including the following:

-B58B30O1 (B58B30B)
-B58B30M1 (B58B30C)

NOTE: 18-0085 INCLUDES 1 GASKET ONLY. A TOTAL OF QUANTITY 6 ARE REQUIRED IF REPLACING ALL GASKETS.