Abstract: A spool valve includes a cylindrical spool body defining porting for control of fluid flow through the spool body, the spool body having pockets on an outer surface and sealing inserts received within the pockets. The sealing inserts and the porting are configured to control fluid flow through the spool valve based on an alignment of the sealing inserts and the porting corresponding to rotational positioning of the spool valve within a valve housing. The spool valve may be incorporated into a filter head of a filter assembly including a first filter and a second filter. Based on the rotational position of the spool valve, the spool valve is configured to block fluid flow to and from one of the filters and permit fluid flow to and from the other of the filters, the sealing inserts providing a seal against the valve housing to prevent leakage from the blocked filter.