Air Filter Covers

Use a 14 x 5 Outerwears pre-filter with a 14 x 4 air filter to allow the prefilter to wrap over the top and bottom of the filter housing. Outerwears Pre-filters are designed to enhance the efficiency of any performance or exposed air...

pecifically designed Outer wears for Walker Performance Filtration. These white outer wears help distinguish the good from the bad. They let you see when the element needs cleaned and replaced much sooner than the colored versions.They let you see the...