Direct replacement engine air filter sized for Focus performance air intake systems. Designed to fit aftermarket intake setups on 2000–2004 Focus models. Red finish matches custom intake builds and visibility during routine maintenance checks.
Will this fit my factory air box or only aftermarket intake systems?
This filter is engineered for aftermarket intake applications. Test-fit before installing — factory air box geometry may not accommodate this filter's dimensions.
Do I need to oil or treat this filter before installation?
Depends on your intake system. If you're running a reusable high-flow setup, check your intake manufacturer's care instructions. Standard disposable filters install dry.
How often should I replace it?
Follow your vehicle's service manual — typically every 15,000–30,000 miles depending on driving conditions. Dusty or off-road environments require more frequent changes.
Products are direct shipped from Supplier.
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**Rates from 0%-36% APR. Payment options through Shop Pay Installments, are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers https://www.affirm.com/licenses.