aFe 54-12592 Magnum FORCE Stage-2 Cold Air Intake System w/Pro 5R FilteraFe 54 12592 Magnum FORCE Stage 2 Cold Air Intake System w Pro 5R Filter 5 1 2" Conical Filter with Inverted Top: This intake utilizes a huge 5 1 2" oval conical Pro 5R performance air filter with inverted top for maximum flow. This 5 layer progressive, oiled cotton gauze air filter provides maximum flow for increased horsepower and torque. Top Mounted Heat Shield Design: aFe developed this heat shield to snap onto the top of the lower half of the