K&N 57i Performance Air Intake Kit for Ford Focus ST (MK1)


Part no: 57-0441
£183.47

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K&N 57i Performance Induction Kits

  • Designed to Increase HP and Acceleration
  • Engineered to Specific Vehicle Design
  • Easy to Install, Usually in 90 minutes or less!
  • Lasts up to 100,000 Miles Before Service is Required (depending on driving conditions)
  • Million Mile Limited Warranty
  • Replaces OEM Filter and Air Box
  • Air Filter is Washable and Reusable
  • Works with Original Equipment Manufacturer Computer Systems
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    HORSEPOWER YOU CAN FEEL

    As with all our induction kits, when you bolt-on a 57i intake, you will notice the difference the next time you drive your vehicle. Our 57i Gen I Intake Kits are a great way and in many cases the only way to maximize airflow and engine performance. They will replace the factory air box providing both High-Flow air filter technology and a larger air filter size. This winning combination will increase horsepower and sound great too.

    BREAK OUT OF THE FACTORY AIR BOX

    57i Series Induction Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. Gen I's take advantage of the added airflow provided by an oversized air filter released from the restrictive factory air box.

    TECH TALK

    These induction kits bring engine airflow out of the factory box by providing a large size open-air conical or round High-Flow Air Filter. The extra surface area of these open-air air filters provides even more airflow at lower restriction than a K&N O/E replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is then either directly attached to the engine carburettor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adaptors are made from high-quality materials such as steel, aluminium, silicon or reinforced nylon and ensure long life.

    Photo for Illustration Purposes - May Not Reflect Actual Item

    Most of our K&N products are stocked and ship within 2 working days. To make sure you’re not hit with unexpected delays, please email us at shop@carthrottle.com

    All car parts are sent via a tracked delivery service or courier, depending on the size and weight of the shipment.

    Shipping to the UK can vary depending on manufacturer, but we advise customers to expect delivery of their order within 3-5 working days.

    If you aren't happy with your order for whatever reason, you are able to make a return within 30 days of purchase for a full refund. To find out more about our returns policy, visit our returns page

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