Compatible with (PL71/PL72) - 3.0SC/3.0D/3.2L/3.6L/4.9D/5.0D/4.2L/4.5T/4.8L (385x187); APR High Flow Intake Filters are a direct upgrade to your factory intake system! Typically your engine is equipped with a cheap, mass-produced and restrictive paper filter system that must be replaced several times in the life of the vehicle. The APR Filter uses a proprietary, high-flow, cotton-gauze filtration material that is washable and will likely outlive the vehicle itself! The filtration material was flow-bench optimized to provide maximum performance while also providing excellent filtration that will keep your engine running clean for hundreds of thousands of miles with normal maintenance.