Clean and dry the oil/air separator mating surfaces. Apply liquid gasket, Part No 08C70-K0234M, 08C70-K0334M or 08C70-X0331S, evenly to the block mating surface of the oil/air separator and to the inner threads of the bolt holes. Install the oil/air separator.

Disconnect the oil pressure switch connector, then remove the oil pressure switch. Apply liquid gasket to the oil pressure switch threads, then install the oil pressure switch.