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K&N® Gasoline and Diesel Fuel Filters Offer Exceptional Engine Protection

There’s no getting around it—carbon deposits and contaminants in fuel can lead to a reduction in fuel economy, an increase in negative emissions, and a decrease in your vehicle’s performance. Fuel quality can be variable, but there’s one thing that you can definitely control—the quality of your fuel filter.

Poorly filtered fuel can cause rapid wear and/or build up on the intake valves and the fuel injectors—and can even clog carburetor jets. When an engine receives a high volume of deposits, the following issues may present themselves:

K&N PF-3000 canister-style diesel fuel filter

The K&N PF-3000 is an in-line diesel fuel filter

• Hesitation

• Knocking/pinging

• Rough idle

• Reduced fuel economy

• Higher emissions

When it comes to preventing expensive damage to your vehicle’s fuel delivery system, you need a high-quality line of defense. K&N® performance fuel filters are engineered to the same rigorous standards as the world-famous High-Flow Air Filters™, and feature durable construction, high flow rates, and outstanding filtration. A blend of cellulose and synthetic filtration media removes most rust, dirt, scale, and other contaminants—helping to keep your engine functioning reliably, even in the presence of polluted fuel.

K&N PF-4000 cartridge-style diesel filter

The K&N Diesel Fuel Filter PF-4000 is a cartridge-style diesel fuel filter

K&N® filters are available for a variety of gasoline and diesel cars and trucks and are designed to meet or exceed OEM specifications. To make installation easy, K&N® fuel filters are designed as direct replacements for factory filters, and require no modifications to the factory mounting system.

Whether you’re searching for gasoline or diesel applications or for an in-line or cartridge style, you can visit to locate the filter that fits your vehicle. High-quality materials and meticulous engineering allow for durability even under tough driving conditions, and with hard-wearing construction and a 1-Year Limited Warranty, you can feel confident in K&N’s reputation for superb quality and fantastic customer service.

K&N® has enjoyed a long partnership with O’Reilly Auto Parts, and is proud to announce that K&N® performance fuel filters will now be available at O’Reilly locations nationwide—making it convenient for you to pick up your replacement performance parts in-store at your nearest location or at! Whether you like to do your shopping in-store or from the comfort of your home, K&N® and O’Reilly have the fuel filter for you.

K&N® gasoline and diesel fuel filters are available now in-store at O’Reilly Auto Parts, or online at or!

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