AEM Cold Air Intake Systems 21-765C - Read Reviews on AEM #21-765C

AEM Cold Air Intake Systems

Vehicle Specific

Part Number: 21-765C

This item cannot be shipped to the following

US State(s), Territory or Military address(es): CALIFORNIA

Features & Benefits

The AEM 21-765C 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 3 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 crank case 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 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 21-765C vehicle applications to determine the legal status for each vehicle.

  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum tubing
  • Easy to install using commonly available tools
  • Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
  • Washable and reusable oil-free filter media
Product Details
Part Number: 21-765C
Weight: 6.74lbs
Notes: Enter your vehicle information above to see product notes.
Air Box Included: No
Air Filter Element Color: Red
Air Filter Element Material: Non-woven Synthetic
Air Filter Element Washable: Yes
Air Filter End Cap Color / Finish: Black
Air Filter Heat Shield Included: No
Air Filter Oil Included: No Filter Oil Required
Air Filter Outlet Length (in): 0.88
Air Filter Outlet Shape: Circular
Air Filter Outlet Width (in): 2.75
Air Filter Overall Height (in): 5
Clamp Color / Finish: Natural
Clamp Material: Stainless Steel
Clamp Quantity Included: 4
Clamp Type: Regular
Coupler Color / Finish: Black
Coupler Material: 80 Durometer EPDM
Coupler Quantity Included: 1
Intake Pipe Color / Finish: Gunmetal Gray
Intake Pipe Inlet Length (in): 25
Intake Pipe Inlet Shape: Circular
Intake Pipe Inlet Width (in): 2.75
Intake Pipe Material: Aluminum
Intake Pipe Outlet Length (in): 25
Intake Pipe Outlet Shape: Circular
Intake Pipe Outlet Width (in): 2.75
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Vacuum Tubing Color / Finish: Black
Vacuum Tubing Included: Yes
Vacuum Tubing Material: Silicone
Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
This product may be shipped directly by the vendor to any eligible US addresses, excluding APO/FPO/DPO or US Territory addresses.
  • Overall

    AEM Cold Air Intake Systems


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