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.
The AEM 21-678C 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 Mitsubishi Lancer Evolution, MR and GSR 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 replacement air box which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from 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 mass air flow sensor, air bypass valve and engine vacuum lines as well as a replacement rubber inlet hose. The wide 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).
- Increased horsepower
- Tuned and dyno-tested to improve acceleration and engine sound
- 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
Application Summary:
| Year |
Make/Model |
| 2008 |
Mitsubishi Lancer |
| 2010-2015 |
Mitsubishi Lancer |
| Attributes |
| Air Box Included |
No |
| Air Filter Color |
Red |
| Air Filter Element Washable |
Yes |
| Air Filter Height |
5.125 in (130 mm) |
| Air Filter Large End Diameter |
6 in (152 mm) |
| Air Filter Material |
Non-woven Synthetic |
| Air Filter Oulet Length |
3.000 in. (76mm) |
| Air Filter Oulet Width |
3.000 in. (76mm) |
| Air Filter Outlet Length |
3 in (76 mm) |
| Air Filter Outlet Shape |
Round |
| Air Filter Outlet Width |
3 in (76 mm) |
| Air Filter Washable |
Yes |
| Alternate Part Number |
AEM-21-678C |
| ASIN |
B001DX9GPI |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| CARB EO Number |
D-670-26 |
| Clamp Color |
Natural |
| Clamp Color/Finish |
Natural |
| Clamp Material |
Steel |
| Clamp Quantity |
5 |
| Clamp Style |
Regular |
| Clamps Included |
5 |
| Country of Origin (Primary) |
US |
| Coupler Color |
Not Applicable |
| Coupler Color/Finish |
Not Applicable |
| Couplers Included |
None |
| Emission Code |
Legal US |
| Estimated Horse Power Gain |
17.0 HP @ 4100 RPM |
| Estimated Horsepower Gain |
17 HP @ 4100 RPM |
| Filter Color |
Red |
| Filter Material |
Non-woven Synthetic |
| Harmonized Tariff Code (Schedule B) |
8421310000 |
| Hazardous Material Code |
N |
| Horse Power Increase |
17 HP |
| Intake Pipe Color |
Gunmetal Gray |
| Intake Pipe Color / Finish |
Gunmetal Gray |
| Intake Pipe Inlet Length |
7.5 in (191 mm) |
| Intake Pipe Inlet Shape |
Round |
| Intake Pipe Inlet Width |
3 in (76 mm) |
| Intake Pipe Material |
Aluminum |
| Intake Pipe Outlet Length |
7.5 in (191 mm) |
| Intake Pipe Outlet Shape |
Round |
| Intake Pipe Outlet Width |
3 in (76 mm) |
| Intake Pipe Ports |
All intake tube ports needed for the specified applications are included |
| Item Weight |
9.000 lbs. (4.1 kg) |
| Life Cycle Status Code |
Available to Order |
| Mass Air Flow Sensor Adapter Included |
Yes |
| Mass Air Flow Sensor Included |
Mass Air Flow Sensor Adapter Included When Required |
| Mounting Hardware Included |
Yes |
| NAFTA Preference Criterion Code |
B |
| Oil Included |
No, No Filter Oil Required |
| Package Material |
Paperboard |
| Package Type |
Box |
| Product Box Height |
12.250 in. (311mm) |
| Product Box Length |
20.250 in. (514mm) |
| Product Box Width |
12.250 in. (311mm) |
| Product Style |
AEM Cold Air Intake System |
| Replacement Filter |
21-203DK |
| RPM |
4100 |
| SDR Required Flag |
N |
| Standard Pack |
1 |
| Street Legal In All US States |
Legal for use in all 50 states. |
| System Type |
Cold Air Induction |
| TUV Approved (Europe) |
No |
| Warranty |
Limited Lifetime |
| Weight |
9 lb (4.1 kg) |
| GTIN |
00840879018917 |