Replace the old air filter in your 2020-2022 Ram 1500 3.0L EcoDiesel with a Drop-In Air Filter. Most factory-style drop-in air filters are made with a paper filter media, and aftermarket performance air filters generally use a cotton-gauze media that requires filter oil, or a synthetic dry media. An air filter is a crucial component for your engine and its purpose is to keep harmful airborne dust and debris out of your engine. Replace the factory air filter on your vehicle with a quality drop-in air filter from S&B Filters, AFE, K&N Engineering, and others at XDP. A drop-in air filter is named after the simple installation as it simply drops into the factory airbox in most applications.