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 21-491C 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 Mazda 6 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. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor and crankcase 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).
  • 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
2005-2008 Mazda 6
Attributes
ASIN B001DX7FLK
Air Box Included No
Air Filter Color Red
Air Filter Element Washable Yes
Air Filter Height 5.25 in (133 mm)
Air Filter Large End Diameter 6 in (152 mm)
Air Filter Material Non-woven Synthetic
Air Filter Oulet Length 2.750 in. (70mm)
Air Filter Oulet Width 2.750 in. (70mm)
Air Filter Outlet Length 2.75 in (70 mm)
Air Filter Outlet Shape Round
Air Filter Outlet Width 2.75 in (70 mm)
Air Filter Washable Yes
Alternate Part Number AEM-21-491C
CARB EO Number D-670-15
California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Clamp Color Natural
Clamp Color/Finish Natural
Clamp Material Steel
Clamp Quantity 3
Clamp Style Regular
Clamps Included 3
Color Gunmetal Gray
Country of Origin (Primary) US
Coupler Color Not Applicable
Coupler Color/Finish Not Applicable
Couplers Included None
Emission Code Legal US
Filter Color Red
Filter Material Non-woven Synthetic
GTIN 00840879016142
Harmonized Tariff Code (Schedule B) 8421310000
Hazardous Material Code N
Intake Pipe Color Gunmetal Gray
Intake Pipe Color / Finish Gunmetal Gray
Intake Pipe Inlet Length 34 in (864 mm)
Intake Pipe Inlet Shape Round
Intake Pipe Inlet Width 2.75 in (70 mm)
Intake Pipe Material Aluminum
Intake Pipe Outlet Length 34 in (864 mm)
Intake Pipe Outlet Shape Round
Intake Pipe Outlet Width 2.75 in (70 mm)
Intake Pipe Ports All intake tube ports needed for the specified applications are included
Item Weight 5.800 lbs. (2.6 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 11.600 in. (295mm)
Product Box Length 24.380 in. (619mm)
Product Box Width 12.200 in. (310mm)
Product Style AEM Cold Air Intake System
Replacement Filter 21-202DK
SDR Required Flag N
Standard Pack 1
Street Legal Yes
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 5.8 lb (2.6 kg)

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AEM Induction Systems 21-491C Cold Air Intake System

Product Information

Vehicle Fitment