AEM 19-20 Mazda 3 2.5L L4 Cold Air Intake (21-877C)
This high-performance air intake system lets your engine breathe freely, delivering significantly more airflow than the restrictive factory intake housing. Expertly engineered, tuned, and dyno-tested, it’s built to boost horsepower, increase torque, and enhance overall driving response. Air is drawn in through an oversized AEM Dryflow synthetic air filter, designed for exceptional airflow, superior filtration, and long-lasting performance. The mandrel-bent aluminum intake tube features a tough gunmetal gray powder-coated finish for strength, durability, and a premium look under the hood. To further optimize efficiency, a custom-shaped heat shield with a lid helps protect intake air from engine heat. The oil-free, synthetic Dryflow filter uses a tapered cylindrical design and can go up to 100,000 miles before requiring cleaning—depending on your driving conditions. Upgrade your ride with a system that delivers real performance gains, reliable protection, and long-term value.
Application
- Mazda 3 2.5L (2019, 2020)
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 | 8.97 HP @ 5209 RPM |
| Replacement Filter | 21-203DK |
| 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 |
To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.
Depending on the package, we ship using different carriers according to the item's location, content, and size.
Freight truck & international items, will require up to 7 business days to ship due to size and logistics.
All orders made after 3:00pm ET will be processed the next business day.
Unless otherwise noted as "In Stock" with qty amount. Pre-Orders, Special orders, & Made to order items have an estimate of 5+ weeks for USA made parts and 10+ weeks for JDM/ Overseas parts. Please check with us for exact ETA as it will vary by brand and item.
Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $200.
All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.
Processing and logistics on in stock international orders will take up to 7 business days to process & ship as sometimes we only have 1 international pickup a week.
In stock, non pre-orders or special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Pre-Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any non credit card processed order will have a 6% cancelation fee to cover the loan processing or 3rd party merchant fee. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.
WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.
AEM 19-20 Mazda 3 2.5L L4 Cold Air Intake (21-877C)
