The AEM 21-731C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Ford Fiesta models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the valve cover breather hose. 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). The air intake system is easy to install with commonly available tools. 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 21-731C vehicle applications to determine the legal status for each vehicle.
Specifications:
| Description_DEF |
Engine Cold Air Intake Performance Kit |
| Description_DES |
Cold Air Intake System |
| Description_MKT |
The AEM 21-731C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Ford Fiesta models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the valve cover breather hose. 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). The air intake system is easy to install with commonly available tools. 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 21-731C vehicle applications to determine the legal status for each vehicle. |
| Description_EXT |
AEM's Performance Cold Air Intake Systems are designed, tuned and dyno-tested to give your engine more power and acceleration by replacing the restrictive factory air filter, air intake tubing and air box assembly. |
| Description_INV |
Cold Air Intake System |
| Description_SHO |
Cold Air Intake Syst |
| Clamp Material |
Stainless Steel |
| Street Legal In All US States |
Yes |
| Warranty |
Limited Lifetime |
| Title |
AEM AEM-21-731C Cold Air Intake System |
| Weight |
7.1 lb (3.2 kg) |
| Clamp Color/Finish |
Natural |
| CARB EO Number |
D-670-19 |
| Clamps Included |
3 |
| Horse Power Increase |
7 HP |
| Package Material |
Paperboard |
| Package Type |
Box |
| Prop 65 (C, R or CR) |
CR |
| Prop 65 Yes/No |
Yes |
| TUV Approved (Europe) |
No |
| Air Box Included |
No |
| Air Filter Color |
Red |
| Air Filter Outlet Shape |
Round |
| Air Filter Washable |
Yes |
| Coupler Color/Finish |
Black |
| Intake Pipe Ports |
All intake tube ports needed for the specified applications are included |
| Mass Air Flow Sensor Adapter Included |
No |
| Mounting Hardware Included |
Yes |
| Prop 65 - Short Label |
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Prop 65 Warning Label |
https://www.knfilters.com/images/l/prop65.jpg |
| Replacement Filter |
21-2011DK |
| RPM |
4900 |
| Air Filter Material |
Non-woven Synthetic |
| Clamp Style |
Regular |
| Couplers Included |
1 |
| Estimated Horsepower Gain |
7 HP @ 4900 RPM |
| Intake Pipe Color / Finish |
Gunmetal Gray |
| Intake Pipe Material |
Aluminum |
| Oil Included |
No |
| Product Style |
AEM Cold Air Intake System |
| Length |
9.0000 |
| Width |
15.0000 |
| Height |
18.0000 |
| Weight |
7.0000 |
