The new Stealth pre-filter is installed inside the tank. It replaces the stock fuel cell outlet bulkhead with a unique bulkhead fitting that comes with it. This bulkhead is unique because it provides support for the filter on the inside while providing the high-flow connection needed to feed the pump on the outside. 

-AN-12 male flare, 100-micron stainless steel element

This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.