Aftermarket Filtration Systems

Aftermarket fuel supplemental filtration systems may be used, provided they do not replace the factory-installed system or reduce fuel volumes, pressures, or flow rates delivered to the engine. Fuel filters must be properly sized to provide the proper fuel flow to the engine. A fuel/water separator, if used, must be installed between the fuel tank and the inlet side of the engine fuel pump (>93% water separation at maximum flow per ISO-4020).