AEM 2021 Mazda 3 L4-2.5L F/I Cold Air Intake System (21-884c)
AEM 2021 Mazda 3 L4-2.5L F/I Cold Air Intake System (21-884c)
AEM Induction
Couldn't load pickup availability
- ✔ Verified fitment & authentic brands
- ✔ Secure checkout via Shopify, Stripe, and PayPal
- ✔ Enthusiast-run support — not a marketplace
- ✔ Fair resolution on damaged or incorrect orders
Every product is sourced from authorized manufacturers or distributors. If something isn’t right with fitment or condition, we’ll work with you to resolve it fairly.
NO GUESSWORK,
JUST PARTS THAT WORK.
Let’s finish that car.
PRODUCT DETAILS
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. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air intake tube is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. A custom shaped heat shield with lid is included. The tapered cylinder 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).
Application
- Mazda 3 L4-2.5L (2021, 2022, 2023, 2024, 2025)
Features
- Increased horsepower
- Heat Shield with Lid.
- Low restriction aluminum tubing
- Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
- Washable and reusable oil-free filter media
Specifications
| Estimated Horsepower Gain | 6.76 HP @ 4524 RPM |
| Replacement Filter | 21-2110DK |
| Air Filter Color | Red |
| Air Filter Material | Non-woven Synthetic |
| Air Filter Outlet Shape | Round |
| Clamps Included | 3 |
| Clamp Material | Stainless Steel |
| Clamp Style | Worm Gear |
| Couplers Included | 1 |
| Product Style | AEM Cold Air Intake System |
| Intake Pipe Color / Finish | Gunmetal Gray |
| Intake Pipe Material | Aluminum |
| Street Legal In All US States | Not legal for sale or use in California on any pollution controlled motor vehicle. |
| TUV Approved (Europe) | No |
| Weight | 10 lb (4.5 kg) |
| Product Box Height | 12.25 in (311 mm) |
| Product Box Length | 20.25 in (514 mm) |
| Product Box Width | 12.25 in (311 mm) |
| California Restricted | Not legal for sale or use in California |
| Mounting Hardware Included | Yes |
| Warranty | Limited Lifetime |
WHY WE CARRY THIS
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
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. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air intake tube is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. A custom shaped heat shield with lid is included. The tapered cylinder 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).
Application
- Mazda 3 L4-2.5L (2021, 2022, 2023, 2024, 2025)
Features
- Increased horsepower
- Heat Shield with Lid.
- Low restriction aluminum tubing
- Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
- Washable and reusable oil-free filter media
Specifications
| Estimated Horsepower Gain | 6.76 HP @ 4524 RPM |
| Replacement Filter | 21-2110DK |
| Air Filter Color | Red |
| Air Filter Material | Non-woven Synthetic |
| Air Filter Outlet Shape | Round |
| Clamps Included | 3 |
| Clamp Material | Stainless Steel |
| Clamp Style | Worm Gear |
| Couplers Included | 1 |
| Product Style | AEM Cold Air Intake System |
| Intake Pipe Color / Finish | Gunmetal Gray |
| Intake Pipe Material | Aluminum |
| Street Legal In All US States | Not legal for sale or use in California on any pollution controlled motor vehicle. |
| TUV Approved (Europe) | No |
| Weight | 10 lb (4.5 kg) |
| Product Box Height | 12.25 in (311 mm) |
| Product Box Length | 20.25 in (514 mm) |
| Product Box Width | 12.25 in (311 mm) |
| California Restricted | Not legal for sale or use in California |
| Mounting Hardware Included | Yes |
| Warranty | Limited Lifetime |
