Large, see through, filter area...You can see when it's time to replace.Arrow on filter body indicates proper orientation when installing.Replacement fuel filter for Briggs & Stratton, Kohler, and others. 60 micron. 1/4" nipples. Will replace most fuel filters with 1/4" nipples. Larger than many of the OEM filters and has a clear bowl so you can see when it's dirty.