Cobb SF Air Intake Replacement Filter Ford Fiesta ST (2014-2019) 3.0" or 4.5" Inner Diameter

Fitment Information

• Ford Fiesta ST (2014, 2015, 2016, 2017, 2018, 2019) 

Specs & Features

• Genuine Replacement: Designed specifically to fit COBB Fiesta ST Intake Systems without any guesswork.
• The 4.5" Option: Features a massive flange with an Integrated Velocity Stack to smooth airflow; fits current Gen Intakes and Redline Carbon Fiber kits.
• The 3" Option: Features a standard flange with a 6-inch length for specific intake configurations.
• Tested Durability: Constructed from durable blue oiled woven cotton that is fully washable and reusable.
• Zero Downtime: The perfect "rotation" filter—swap this one in while your dirty filter is being cleaned and dried.

Product Description

Maintenance is a necessary evil, but it doesn't have to keep your car off the road. Let's face it: cleaning an air filter properly involves washing, rinsing, and then... waiting. Waiting for the cotton to dry completely before re-oiling can leave your car sitting on jack stands overnight. That is exactly why picking up a replacement COBB High Flow Filter is the smartest move for a Fiesta ST owner. By keeping a spare on the shelf, you can perform a "pit-stop" swap—toss in the fresh filter immediately and clean the dirty one at your leisure. No downtime, no stress, just boost.

It is crucial to pick the right size for your specific setup, as COBB Tuning offers two distinct variations.

• The 4.5" ID version is an engineering marvel, featuring an integrated velocity stack that smooths out chaotic air for maximum laminar flow; this is the required part for the current Standard Intake and the premium Redline Carbon Fiber Intake. For those running the smaller piping setup.
• The 3" ID version offers a 6-inch long element perfect for those specific builds. Both options use COBB's proprietary oiled woven cotton media to trap grime without strangling airflow.

COBB builds these to be the last filters you ever need to buy, but having a backup plan ensures your engine never has to suck in dirty air or sit idle waiting for a filter to dry.