AEM Induction · New
AEM 4in Universal Cold Air Intake System
MPN 21-5011 · Store SKU aem21-5011
Supplier stock checked 11/7/2026, 11:10:24 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
AEM's 21-5011 is ideal for engine swaps when a custom intake is required. It comes with an AEM Dryflow Air Filter, three 4 inch diameter aluminum tube bends, one straight 36 inch long, 4 inch diameter tube, seven couplers, a weld-on mass air flow sensor pad, two brackets and hardware needed to custom build an air intake. AEM's 21-5011 is ideal for engine swaps when a 4 inch diameter custom air intake is required. Universal Cold Air Intake System 4in. UNIVERSAL CUSTOM ASSEMBLY
Manufacturer fitment & guides
Check 21-5011 against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y