S451

Ensure quad ring is fully seated in housing groove and lube with clean oil before installation.

Quad ring can normally be used for several oil changes.

Torque filter to either factory specs or 18-20 lb ft, whichever is less

The Filter Element (FE401) is a new design which allows for easier cleaning and a less expensive Filter Element Exchange.

Filter Number S451

(The S51 is now the S451)