K&N Cold Air Intake Kit: High Performance, Increase Horsepower: 50-State Legal: Compatible with 2002-2004 FORD (Focus RS)57I-2502

K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's Million Mile Limited Warranty. These intake kits use only non-metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow "chain" robs a vehicle of its natural horsepower. Often that weak point is the factory air path leading to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamically engineered tube drives a massive amount of air into an engine, which translates into POWER. 57i Intakes are not legal for use in California and other US States adopting California emission standards.This part fits the following models:FORD Focus RS 2.0L L4 F/I (2002 - 2004)This list is a sample of all the compatible cars for this part. Make sure this product fits your car by using the part finder above.