Aeromotive 12604 Replacement Filter Element, 100-Micron Stainless Mesh, Fits All 2" OD Filter Housings For 12304/12307/12324 Filter Assembly Mechanical Fuel Pumps up to 21-GPM Supports up to 5,000 plus Flywheel HP, Forced Induction, on gasoline. Supports up to 4,000 Flywheel HP, Forced Induction on Ethanol. Supports up to 2,000 Flywheel HP, Forced Induction on Methanol