Air Filters - Drop In

Drop-in air filters are the simplest way to unlock better throttle response and engine sound from your vehicle. Designed to replace the restrictive factory paper filter inside the stock airbox, these high-flow panel filters require no modifications—just swap out the old filter, and you're done.

  • Direct replacement for OEM panel filter
  • Engineered for improved airflow over paper elements without compromising filtration
  • No tuning or modifications required—fits the factory airbox securely
  • Long service life, often washable and reusable for reduced waste
  • Available for a wide range of makes and models; verify fitment for your vehicle

Whether you're commuting or pushing hard on back roads, a drop-in filter provides a noticeable improvement in intake response. Shop our selection of top-quality drop-in air filters from trusted brands.

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K&N 33-2936 washable performance drop-in air filter with red oiled cotton media

$55.19

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K&N 33-2919 rectangular drop-in high-flow replacement air filter with red oiled cotton media

$55.19

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K&N 33-2888 high-flow washable oiled cotton drop-in air filter

$55.19

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K&N 33-2873 rectangular high-flow air filter with red oiled cotton media and black rubber frame

$55.19

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K&N 33-2865 high-flow drop-in air filter featuring layered oiled cotton media for factory air box replacement.

$55.19

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K&N 33-2857 replacement air filter featuring pleated red oiled cotton media and a durable black flexible perimeter seal.

$55.19

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K&N 33-2826 replacement high-flow air filter with oiled cotton media and a black polyurethane sealing frame.

$42.39

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K&N 33-2807 high-flow oiled cotton drop-in air filter for 1989-1991 Porsche 944 S2

$67.19

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K&N 33-2786 red pleated high-flow air filter in a black rectangular frame

$83.99

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K&N 33-2773 high-flow oiled cotton replacement air filter for 1997-2004 Porsche Boxster.

$55.19

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K&N 33-2767 drop-in performance air filter featuring red oiled cotton media and a durable black frame.

$46.39

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K&N 33-2731 high-flow washable oiled cotton air filter for 1995-1998 Porsche 911.

$83.99

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K&N 33-2722 washable oiled cotton gauze replacement air filter for Porsche 968

$67.19

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K&N 33-2713 high-flow oiled cotton replacement air filter for Acura NSX

$83.99

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K&N 33-2703 high-flow drop-in air filter with red pleated oiled cotton media and black rubber perimeter seal.

$55.19

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Rectangular K&N replacement air filter featuring red pleated cotton gauze media and a black polyurethane frame.

$50.39

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K&N 33-2676 high-flow oiled cotton drop-in replacement air filter for 1999-2005 Mazda Miata.

$55.19

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K&N 33-2670 High-Flow replacement engine air filter with red pleated cotton media and a black rubberized frame.

$50.39

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K&N 33-2591 high-flow replacement air filter for 1978-1995 Porsche 928 models

$67.19

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K&N 33-2546 high-flow replacement air filter with red oiled cotton media for 1982-1994 Alfa Romeo Spider

$67.19

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K&N 33-2530 high-flow replacement air filter with red oiled cotton gauze media for BMW and Porsche.

$67.19

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K&N 33-2499 high-flow replacement air filter with red pleated oiled cotton media for 2013-2020 Honda and Acura V6-3.5L.

$55.19

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K&N 33-2498 high-flow replacement air filter featuring red pleated oiled cotton media in a black frame.

$55.19

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K&N 33-2497 high-flow replacement panel air filter with red oiled cotton media and black frame.

$55.19

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K&N 33-2496 high-flow cotton gauze replacement panel air filter for Cadillac ATS, CTS and Chevrolet Camaro.

$55.19

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K&N 33-2494 High-Flow Replacement Air Filter with oiled cotton media for Ferrari 360 and F430

$126.39

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K&N 33-2493 high-flow replacement air filter with red pleated oiled cotton media and black flexible gasket.

$55.19

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K&N 33-2491 high-flow replacement air filter with red pleated cotton media for 2013-2016 Dodge Dart.

$55.19

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Red oiled cotton pleated K&N 33-2489 replacement air filter for 2013-2018 Acura RDX.

$55.19

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Set of two K&N 33-2488 high-flow washable oiled cotton replacement air filters for BMW M-series vehicles.

$126.39

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Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

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