Why Upgrade Your Miata with the AEM 21-841DS?
Because the ND Miata is one bolt-on away from feeling noticeably more eager.
The AEM 21-841DS gives you:
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Higher airflow than the restrictive factory box
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Quicker throttle response
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Stronger mid-range pull (huge benefit on the ND)
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A throaty, sporty intake tone that actually matches how the car feels
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AEM oil-free Dryflow filter (washable & reusable)
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Black powder-coated aluminum intake tube for a stealth performance look
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A sealed cold-air path to reduce heat-soak
On the ND, every little airflow improvement translates directly to better responsiveness—and this one delivers.
This Performance Air Intake System allows your engine to breathe more air compared to the restrictive factory air intake housing. It is designed, tuned and dyno-tested to produce more horsepower and torque.
Key Features of the AEM 21-841DS Cold Air Intake
🌀 Mandrel-Bent Black Aluminum Intake Tube
Smooth internal surface for optimized airflow and stable MAF readings.
🧼 AEM Dryflow Filter
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No oil
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Reusable
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Excellent flow + filtration
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Zero MAF contamination nightmares
❄ Cold-Air Positioning
Designed to draw cooler, denser air from the forward section of the bay, not the roasting-hot firewall zone.
Air enters the system from the factory fresh air inlets. through replacement air duct and into a roto-molded, aerodynamic AEM air box containing an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance.
🔧 Perfect ND Fitment
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Uses stock mounting points
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Proper MAF housing dimensions
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No cutting, no drilling, no cursing (okay, maybe a little)
🎧 More Engaging Sound
You’ll hear the SKYACTIV engine breathe harder—especially above 4,000 rpm—without being obnoxious.
The cone shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions).
Performance Expectations for the 2.0L SKYACTIV-G
Typical gains for ND owners:
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Noticeably faster throttle response
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Improved breathing above mid-range
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More willingness to rev
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Better airflow for tuned ND builds
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A far more enjoyable intake sound
You won’t suddenly make NC-turbo power levels, but the driving experience improves instantly.
This Air Intake System is backed by AEM’s Lifetime Limited Warranty.
Daily-Driver Friendly
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Works on stock ECU
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No tune required
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Dryflow filter = low maintenance
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No loss of MPG
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No obnoxious noise—just clean, sporty induction
Your Miata stays a refined roadster… just a more responsive one.
Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal. View the vehicle applications to determine the legal status for each vehicle.
Installation Overview
Estimated time: 45–75 minutes
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Remove the OEM airbox
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Mount AEM’s heat shield
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Install intake tube & couplers
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Transfer MAF sensor
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Install the Dryflow filter
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Tighten everything
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Enjoy your Miata not sounding like it’s inhaling through a coffee straw
From the manufacturer
john –
The see through window into the intake is an awesome added touch, and hands down this is the best product on the market for adding performance!
Rod –
Let me start by saying this will not fit BMW 328i (E90/91) with the factory upraded headlights (HID/non-halogen). The ballist mounted on the headlight interferes with proper fitment. I had to “modify a hole in the front of the intake box to allow fitment. This does increase engine noise and throttle feels slightly more responsive. Quality of plastic does not feel like the best but it’s half the price of the afe intake kit. Far price from a company with a good reputation
Hanni fakhouri –
Tried to install, fitment is incorrect and has gaps from the head where the filter enters to the box its self. Air is coming out and def not worth the price I spent will most likely uninstall and return/ replace it with another one.
Amazon Customer –
If your car has the Xenon headlight (HID) option, the airbox will not clear the headlamp as another reviewer mentioned. Also, the mounting boss for the MAF sensor was too long and interfered with the female socket on the MAF. When fastened down all the way, the socket bottoms out before the MAF flange and thus bends the sensor. Additionally when they drilled the hole for the MAF, they bottomed the holesaw out in the tube below. There was a big semi circular chunk taken out of mine. Pretty sure you don’t want to create turbulence right at the MAF. Other issues- fastener holes not properly located, factory intake snorkel does not fit airbox inlet very well.It’s a real bummer- this one is so close. I’m tempted to keep it and deal with it, but it’s got too many little issues. I really wish the team at AEM had just been a little more thorough on this one.
Yulier –
Se instaló en bmw328
Jonah –
Had to “modify” it a little because it was rubbing again my headlight but was well worth the money
Juan Rivera –
The holes were too small for their own screws. The clear plate access hole wasn’t big enough and it doesn’t even fit in the designated area. Waste of time and money.
Jason –
Made poor let cheap. Big gap where filter mounts to air box. Spend the extra money and go with AFe much more power and way better quality. You will not be disappointed!!
Bmw –
Great cold aie intake for my 3 series e90!
My feel major horsepower boost in my 323i and it gas nice sounds when accelerating. Its a must buy!!!!
Kyle gawlik –
Doesn’t fit if you don’t have upgraded led headlights
Doesn’t fit with stock headlights