AEM 21-451B: Cold Air Intake System FORD FOCUS 02-04 SVT - Blue


AEM 21-451B - AEM Cold Air Intake System FORD FOCUS 02-04 SVT - Blue. cold air intake system relocates the filter outside of the engine compartment to deliver cool air inlet temperatures. Cooler air carries more oxygen, which translates into a more intense explosion in the combustion chamber to create more horsepower and torque. But thats 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 this tuning allows us to deliver large power gains. 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.

Every AEM cold air induction system features high 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 include a lifetime DRYFLOW synthetic air filter and come with a limited lifetime warranty.

FORD FOCUS 02-04 SVT AEM Cold Air Intake System

Product Summary

AEM 21-451B: Cold-Air Kit for Ford Focus 2002-2004
Manufactured by: AEM
Model: 21-451B
Product ID: 66744
Price: $287.99
Condition: New

About AEM

History and information about AEM and their products.

AEM air intake products and AEM induction systems can give your engine more power and as a bonus give you better gas mileage. After just an hour and a few basic hand tools you will have installed an AEM air intake kit and have done just that. AEM induction systems offer their BRUTE FORCE cold air intake kit for engines with larger displacements. These filters draw air from the best location and provide protection from the engine heat. LMPerformance carries the BRUTE FORCE for your Camaro and GTO and GMC SONOMA TRUCK. As an added bonus AEM's air systems include a lifetime DRYFLOW SYNTHETIC air filter that is reusable and does not need filter oil. Best of all AEM air intake systems & AEM induction systems are covered by a Lifetime Limited Warranty.

Shop the extensive inventory of AEM air intake kits for better performance and better gas mileage at a great price at

The renowned AEM company, designer and manufacturer of cold air induction systems, was established in 1987 and since then has become prominent in the racing industry with cars tuned by them winning races and more specifically with cars tuned by them winning at the “Battle of the Imports” thus they were featured on the cover of Turbo Magazine and Sport Compact Magazine – you can’t get much better than that for a recommendation. They are responsible for the creation of the first packaged air induction system that was made available to the public in 1994 making it possible for the average individual to improve their car by increasing torque and horsepower and now their product line is in the hundreds. AEM induction systems does not just sit back on their laurels, they are constantly working to improve existing products and develop new products with innovations such as designing induction systems with specific tube lengths and diameters and giving consideration to the improvement in efficiency created by cooler air in combustion . The list of their product innovations speaks to the company’s desire to make a product that is second to none and they work with companies like K&N to help develop improvements like conical air filters and the list of improvements goes on. A company that is always striving to find a better way, with things like dual chamber intake kits, hybrid induction systems and air bypass valves-the the kind of company you can trust when it comes to deciding on a Cold Air Intake for your car. And the company does not just stop there, they employ stringent testing procedures and quality production techniques to assure you of a product you can trust and they back it up with a warranty that is good for the life of your vehicle unless it has been damaged due to mishandling. Products like the AEM Air Intake & AEM Induction Systems, their biggest and toughest intake systems, are designed so that they will produce more torque and horsepower and provide exceptional filtration. Despite the fact that the Brute Force is not a true cold air intake since it does not route the air filter outside of the engine compartment, it still does generate the air charge from the coolest source thus creating a cold air design. They were purposely designed this way because of the vehicle’s use in conditions that need protection from potential damage; such as off road, and keeping it under the hood system and when necessary using a steel heat shield to shroud the air filter from engine heat accomplishes this goal. The Brute Force Air Intake features AEM’s DRYFLOW Air Filter, an oil free performance air filter, and since it is used on an air intake system it does not need to be cleaned for up to 100,000 miles depending on conditions.

For all of the above reasons the team at LMPERFORMANCE offers you the AEM brand and invite you to peruse the parts that are available for your car, choose the one that is right for you and get it at a competitive price and with free shipping.

AEM 21-451B Cold-Air Kit Review(s)

Reviews for AEM 21-451B (the item on this page) are show below.

Total Reviews for this product: 0

(Be the first to comment about this product)

Other Popular Parts

Below are other popular parts other customers have purchased for their Ford Focus.

* Shipping Notes: Please note FREE Shipping refers to shipping within the contiguous continental US. All other locations extra. If your order will be delayed, you will be notified via email the estimated shipping date.