• Ideal for Engine Swaps: AEM's 21 - 5011 is perfect when you need a custom intake for engine swaps. • Premium Air Filter: Comes with an AEM Dryflow Air Filter for better air intake. • Complete Kit: Includes three 4 - inch diameter aluminum tube bends, a 36 - inch long straight tube, couplers, a weld - on mass air flow sensor pad, brackets, and hardware for custom building an air intake.

This AEM 4in Universal Cold Air Intake System is great for car enthusiasts who are doing engine swaps. It's designed to be used in custom engine setups. The kit includes an AEM Dryflow Air Filter, along with 4 - inch diameter aluminum tubes, some of which are bent and one is 36 inches long. It also comes with couplers, a sensor pad, brackets, and hardware to help you build your own air intake.