Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

AEM 07-13 Mazdaspeed3 2.3L L4 Polished Cold Air Intake

SKU: AEM21-642P

Engine Cold Air Intake Performance Kit

AEM IND Cold Air Intakes...

AEM 07-13 Mazdaspeed3 2.3L L4 Polished Cold Air Intake

SKU: AEM21-642P

Engine Cold Air Intake Performance Kit

AEM IND Cold Air Intakes...

Sale ends in Calculating...

A$767.31 A$883.09
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

The AEM 21-642P 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 Mazdaspeed3 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 chrome-like finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor and breather hoses. 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 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 21-642P vehicle applications to determine the legal status for each vehicle.

Product Overview

AEM pioneered the Cold Air induction system for sport compact cars in 1994. A Cold Air intake system relocates the filter outside of the engine compartment to deliver the coolest air inlet temperatures possible. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horesepower and torque. But that's only part of the power equation. Tuning the inlet pipe in length and diameter to match the engine's resonance helps move more air to the cylinders (think of your engine as a big air pump), and no company on the market can tune an inlet as well as we can. We also monitor fuel trim correction factors and all OBDII sensors during R&D to eliminate leaning the engine out and/or throwing a check engine light. Our Cold Air systems are dyno-proven and tested against the competition to create more useable power than any other system of their kind. Every AEM Cold Air induction system features the highest standards of construction and we are so confident in their fit and performance that we guarantee them for the life of your vehicle. All AEM Cold Air systems are either 50-state legal or pending (excluding "Off Road" and "Hybrid" systems), include a lifetime DRYFLOW Synthetic air filter and come with a limited lifetime warranty. * Outperforms every other Cold Air system on the market * Manufactured and assembled in the USA * 50-state legal or pending legality * Inlet constructed of lightweight aircraft aluminum and mandrel bent for maximum flow * Reinforced TIG-welded brackets and fittings deliver added durability * Utilizes a complete hardware kit with soft mounts for a guaranteed perfect fit * AEM’s lifetime DRYFLOW Synthetic air filter is 99.4% efficient, filters to one micron, and never needs filter oil! * Comprehensive installation instructions, decals and license plate frame included * Available powdercoated in red, blue or silver, or with a mirror-polished finish * Guaranteed for life


Features and Benefits

  • AEM Lifetime Limited Warranty

Product Details

Air Box Included:No
Air Filter Color:Red
Air Filter Element Washable:Yes
Air Filter Height:9.125 in (232 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:2.750 in. (70mm)
Air Filter Outlet Shape:Round
Air Filter Outlet Width:2.750 in. (70mm)
Air Filter Washable:Yes
CARB EO Number:D-670-21
Clamp Color/Finish:Natural
Clamp Color:Natural
Clamp Material:Steel
Clamp Quantity:5
Clamp Style:Regular
Clamps Included:5
Coupler Color/Finish:Black
Coupler Color:Not Applicable
Couplers Included:None
Description:AEM Cold Air Intake System
Estimated Horse Power Gain:14.0 HP @ 3600 RPM
Estimated Horsepower Gain:14.0 HP @ 3600 RPM
Filter Color:Red
Filter Material:Non-woven Synthetic
Finish:Polished
Horse Power Increase:14 HP
Intake Pipe Color / Finish:Polished
Intake Pipe Color:Polished
Intake Pipe Inlet Length:12.000 in. (305mm)
Intake Pipe Inlet Shape:Round
Intake Pipe Inlet Width:2.750 in. (70mm)
Intake Pipe Material:Aluminum
Intake Pipe Outlet Length:31.000 in. (787mm)
Intake Pipe Outlet Shape:Round
Intake Pipe Outlet Width:2.750 in. (70mm)
Intake Pipe Ports:All intake tube ports needed for the specified applications are included
Item Weight:8.000 lbs. (3.6 kg)
Mass Air Flow Sensor Adapter Included:Yes
Mass Air Flow Sensor Included:Mass Air Flow Sensor Adapter Included When Required
Mounting Hardware Included:Yes
Oil Included:No Filter Oil Required
Package Material:Paperboard
Package Type:Box
Part Number:aem21-642P
Product Box Height:8.50 in. (216mm)
Product Box Length:20.25 in. (514mm)
Product Box Width:14.50 in. (368mm)
Product Style:AEM Cold Air Intake System
Prop 65 (C, R or CR):CR
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
Prop 65 Yes/No:Yes
RPM:3600
Replacement Filter:21-2029DK
Street Legal In All US States:Yes
Street Legal:Yes
System Type:Cold Air Induction
TUV Approved (Europe):No
Title:AEM AEM-21-642P AEM Cold Air Intake System
Tube Style:U-Bend
WARNING CA Proposition 65 Message:WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
WARNING CA Proposition 65:Yes
Warranty:Limited Lifetime
Weight:8 lb (3.6 kg)

Part Type

Engine Cold Air Intake Performance Kit

Data: v4.2 - Upd: 2026-09-27 11:44:54

Features

  • AEM Lifetime Limited Warranty
  • Washable and reusable oil-free filter media

Specifications

Air Box Included:
No
Air Filter Color:
Red
Air Filter Element Washable:
Yes
Air Filter Height:
9.125 in (232 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:
2.750 in. (70mm)
Air Filter Outlet Shape:
Round
Air Filter Outlet Width:
2.750 in. (70mm)
Air Filter Washable:
Yes
CARB EO Number:
D-670-21
Clamp Color/Finish:
Natural
Clamp Color:
Natural
Clamp Material:
Steel
Clamp Quantity:
5
Clamp Style:
Regular
Clamps Included:
5
Coupler Color/Finish:
Black
Coupler Color:
Not Applicable
Couplers Included:
None
Description:
AEM Cold Air Intake System
Estimated Horse Power Gain:
14.0 HP @ 3600 RPM
Estimated Horsepower Gain:
14.0 HP @ 3600 RPM
Filter Color:
Red
Filter Material:
Non-woven Synthetic
Finish:
Polished
Horse Power Increase:
14 HP
Intake Pipe Color / Finish:
Polished
Intake Pipe Color:
Polished
Intake Pipe Inlet Length:
12.000 in. (305mm)
Intake Pipe Inlet Shape:
Round
Intake Pipe Inlet Width:
2.750 in. (70mm)
Intake Pipe Material:
Aluminum
Intake Pipe Outlet Length:
31.000 in. (787mm)
Intake Pipe Outlet Shape:
Round
Intake Pipe Outlet Width:
2.750 in. (70mm)
Intake Pipe Ports:
All intake tube ports needed for the specified applications are included
Item Weight:
8.000 lbs. (3.6 kg)
Mass Air Flow Sensor Adapter Included:
Yes
Mass Air Flow Sensor Included:
Mass Air Flow Sensor Adapter Included When Required
Mounting Hardware Included:
Yes
Oil Included:
No Filter Oil Required
Package Material:
Paperboard
Package Type:
Box
Part Number:
aem21-642P
Product Box Height:
8.50 in. (216mm)
Product Box Length:
20.25 in. (514mm)
Product Box Width:
14.50 in. (368mm)
Product Style:
AEM Cold Air Intake System
Prop 65 (C, R or CR):
CR
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
Prop 65 Yes/No:
Yes
RPM:
3600
Replacement Filter:
21-2029DK
Street Legal In All US States:
Yes
Street Legal:
Yes
System Type:
Cold Air Induction
TUV Approved (Europe):
No
Title:
AEM AEM-21-642P AEM Cold Air Intake System
Tube Style:
U-Bend
WARNING CA Proposition 65 Message:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
WARNING CA Proposition 65:
Yes
Warranty:
Limited Lifetime
Weight:
8 lb (3.6 kg)

Reference Information

Brand Name/s Aem Induction
StreetFX SKU aem21-642P
SFX Item ID 5531696
Supplier Item Code 5531696
Manufacturer SKU 21-642P
Manufacturer UPC 840879017590
Alternative References Mazdaspeed3, 2.3L

Compatibility

Loading compatibility information...

Keep shopping

More from Aem Induction