Fuel Filters | Fuelab FUELAB® In-Line Fuel Filters keep your engine running clean. They feature male AN / 37º Flared fitting end caps, so you can attach them directly to other fuel system components*. Also featured are machined internal radii for minimal pressure drop. The compact 818 Series Fuel Filter includes a 3 inch element. FUELAB Fuel Filters - Free Shipping on Orders Over $99 at Find FUELAB Fuel Filters and get Free Shipping on Orders Over $99 at Summit Racing!