The AEM 21-509C 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 Acura CL Type-S 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 relocated to the driver-side wheel well 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 and was developed to accommodate the engine's factory emissions control devices. 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 and it is backed by AEM's Lifetime Limited Warranty. 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 21-509C 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_INV |
Cold Air Intake System |
| 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_MKT |
The AEM 21-509C 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 Acura CL Type-S 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 relocated to the driver-side wheel well 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 and was developed to accommodate the engine's factory emissions control devices. 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 and it is backed by AEM's Lifetime Limited Warranty. 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 21-509C vehicle applications to determine the legal status for each vehicle. |
| Description_SHO |
Cold Air Intake Syst |
| Mass Air Flow Sensor Adapter Included |
No |
| Coupler Color/Finish |
Black |
| Air Filter Washable |
Yes |
| Prop 65 Warning Label |
https://www.knfilters.com/images/l/prop65.jpg |
| Air Box Included |
No |
| Intake Pipe Material |
Aluminum |
| Intake Pipe Ports |
All intake tube ports needed for the specified applications are included |
| Air Filter Material |
Non-woven Synthetic |
| Clamp Style |
Regular |
| Couplers Included |
1 |
| Intake Pipe Color / Finish |
Gunmetal Gray |
| Oil Included |
No |
| Product Style |
AEM Cold Air Intake System |
| Title |
AEM AEM-21-509C Cold Air Intake System |
| Air Filter Color |
Red |
| Air Filter Outlet Shape |
Round |
| Clamp Color/Finish |
Natural |
| Clamp Material |
Steel |
| Clamps Included |
5 |
| Mounting Hardware Included |
Yes |
| Package Material |
Paperboard |
| Package Type |
Box |
| Prop 65 - Short Label |
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Prop 65 (C, R or CR) |
CR |
| Prop 65 Yes/No |
Yes |
| Replacement Filter |
21-203DK |
| Street Legal In All US States |
Yes |
| TUV Approved (Europe) |
No |
| Warranty |
Limited Lifetime |
| Weight |
7 lb (3.2 kg) |
| CARB EO Number |
D-670-15 |
| Length |
11.0000 |
| Width |
13.0000 |
| Height |
35.0000 |
| Weight |
7.0000 |
