AEM Cold Air Intake System | 2002 – 2004 Ford Focus (21-451B) AEM Induction Systems

Cold Air Intake by AEM

The AEM 21-451B 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 Ford Focus SVT 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 blue powder coated finish. This air intake system was developed to accommodate the engine’s factory emissions control devices including the MAF and a replacement silicone engine 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 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 21-451B vehicle applications to determine the legal status for each vehicle.

Features

• Filter Shape: Round
• Filter Color: Red
• Filter Height: 5.125″
• Tube Finish: Blue
• System Type: Cold Air Intakes
• Material: Aluminum
• Air Filter Material: Non-woven Synthetic
• Replacement Filter: 21-203DK
• Filter Large End Diameter: 6″

Benefits

• Delivers more oxygen to the combustion chamber by drawing in cooler air
• Custom designed and engineered to deliver maximum power for each specific vehicle
• Every system includes the innovative, oil-free, high-flow AEM Intakes Dryflow™ air filter
• Dyno-tuned air intake pipe constructed of mandrel-bent 6061 aluminum for smooth airflow
• Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
• Comes complete with all necessary mounting hardware and comprehensive installation instructions
• Backed by the AEM Intakes limited lifetime warranty

Proudly manufactured in the USA

Applications

• 2002 – 2004 Ford Focus

What’s In The Box?

• 1 – Cold Air Intake

Warranty

• Manufacturers Standard Warranty