K&N Drop-In Replacement Air Filter(97-08 4.2L, 4.6L F-150; 97-03 5.4L F-150)Find parts that fit my vehicle

More Power. Whether it’s time to replace your OEM paper filter or you’re looking to upgrade, there are few more affordable or easy ways to improve the power and torque of your F150, F250, or F350 than a K&N Drop-In Air Filter. By replacing your restrictive paper filter with a free-flowing K&N filter, you’ll untap hidden horsepower and improve throttle response. Protect Your Engine. K&N’s legendary layered design uses oil-treated cotton gauze between two epoxy-coated aluminum wire screens. The oil creates small pores through which air flows more freely compared to OE paper filters. Unlike paper, the tackiness of the oil collects and filters out the dirt and contaminants that could otherwise harm your engine. It’s the best of both worlds – high airflow and superior protection, in one affordable package. Save Money. Unlike paper filters, which have to be replaced at regular intervals when they become clogged with dirt and contaminants, K&N’s filters can be cleaned and re-charged with their filter cleaning kit. In addition to making more power, you’ll even save some green. Direct Replacement. K&N’s replacement air filters install in the factory location for an easy, hassle-free installation. No cutting or trimming is required. Application. This K&N replacement air filter fits 97-08 F150s with 4.2L or 4.6L engines, 97-03 F150s with 5.4L engines, and 99-04 F250 or 350 SuperDutys with 5.4L or 6.8L engines. Also fits 04 F150 Heritage 4.2L, 4.6L, or 5.4L, 99 F250 with 4.6L, and 00-01 F150 Harley Davidson. Specifications: Product Style: Tapered Conical Air Filter Base Inside Diameter: 4.438 in (113 mm) Base Outside Diameter: 8 in (203 mm) Height: 8 in (203 mm) Hardware Included: None
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K&N E-0945

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