RBP RBP-61513 Air Intake System with Donaldson Powercore Filtration Technology for Jeep Wrangler 3.8L Meets and exceeds all OEM filtration standards and will not void the factory warranty 100,000 mile free replacement warranty and no oil, no cleaning, zero maintenance Flow is 35 per cent more than conventional pleated filters and out performs cotton gauze filters by 10 per cent with 99.99 per cent filtration v/s 98.34 with the competitions cotton filters Traps less than 1 micron of dirt and dust while boosting efficiency and improving performance All tested in ISO5011 certified test facilities