Upgrade the air filter in your 2014-2018 Jeep Grand Cherokee 3.0L EcoDiesel with a new Drop-In Air Filter. Drop-in air filters get their name from their designn as most have a "drop-in" installation and simply fit inside the factory air box. The air filter is a critical component in your vehicle and is designed to keep dust, debris, and contaminants out of your engine. Find drop-in filters from manufacturers like S&B Filters, AFE, K&N Engineering, and others at XDP. In most cases an oe-style drop-in air filter will be made with paper filter media, where an aftermarket air filter typically features a synthetic media, or a cotton gauze design that may be dry or oiled.