K&N 57S-4000 Performance Air Intake System for 2004-2018 Ford Focus 1.0L-2.5L L4

Vehicle Fitment

• 2004-2018 Ford Focus (All trims, 1.0L-2.5L I4/I5/I6, FWD)
• 2014-2018 Ford Transit Connect (All trims, 1.6L-2.5L I4, FWD)
• 2012-2018 Ford C-Max (All trims, 1.6L-2.5L I4, FWD)
• 2020 Ford C-Max (All trims, 1.6L-2.5L I4, FWD)

Features

• High-flow, roto-molded intake tube for improved airflow
• Oversized conical K&N high-flow air filter
• Injection-molded air box lid with K&N logo
• Reduces air flow restriction for increased horsepower and acceleration
• Designed to smooth and straighten air flow
• Easy installation with commonly available tools
• Filter can be used for up to 100,000 miles before servicing (depending on driving conditions)
• Backed by K&N's Million Mile Limited Warranty

Specifications

• Air Filter Color: Red
• Air Filter Material: Cotton Gauze
• Air Filter Outlet Shape: Round
• Filter Service Life: Up to 100,000 miles (depending on driving conditions)
• Installation Difficulty: Easy (approx. 90 minutes)
• Emissions Compliance: Not legal for sale or use in California or other states adopting California emission standards

Included Components

• 1x High-flow air filter
• 1x Roto-molded intake tube
• 1x Injection-molded air box lid
• 1x Heat shield
• All necessary mounting hardware
• Installation instructions

Product Description

The K&N 57S-4000 Performance Air Intake System is engineered to replace the restrictive factory air filter and air box lid, allowing your engine to inhale a larger volume of air. This results in increased horsepower and acceleration throughout the engine's RPM range. The system features a high-flow, roto-molded intake tube and an oversized conical K&N high-flow air filter, designed to dramatically reduce air flow restriction and smooth and straighten air flow.

Installation is straightforward and can be completed with commonly available tools. The high-flow air filter is designed to last up to 100,000 miles before servicing is needed, depending on driving conditions. Backed by K&N's Million Mile Limited Warranty, this performance air intake system is built to last for the life of your vehicle.

Please note: This product is not legal for sale or use in California or other states adopting California emission standards.