The AEM 21-5011 is a universal 4-inch cold air intake system built for engine swaps and custom intake fabrication. It includes an AEM Dryflow air filter, three 4-inch diameter aluminum tube bends, one 36-inch straight 4-inch diameter tube, seven couplers, a weld-on mass air flow sensor pad, two brackets, and the hardware needed to build a custom intake system for a wide range of applications.
Installation InstructionsSpecifications:
- Filter Type: AEM Dryflow oil-free, washable, reusable synthetic media
- Tube Diameter: 4 inches
- Included Components: 3 aluminum tube bends, 1 straight 36in tube, 7 couplers, weld-on MAF sensor pad, 2 brackets, mounting hardware
- Construction: Manufactured in the USA
- Warranty: AEM Limited Lifetime Warranty
- Part Number: 21-5011
FAQ
What is the AEM 21-5011 used for?
The 21-5011 is a universal 4-inch cold air intake kit designed for engine swaps or custom intake builds where a specific-fit intake system is not available.
What's included in the kit?
It includes an AEM Dryflow air filter, three 4-inch aluminum tube bends, one 36-inch straight 4-inch tube, seven couplers, a weld-on mass air flow sensor pad, two brackets, and mounting hardware.
Where is it manufactured?
The AEM 21-5011 is manufactured in the USA and backed by AEM's Limited Lifetime Warranty.

