PRL Motorsports 4.00" Inlet Oiled Cone Filter - Short (PRL-AF-4258)

Regular price $50.34 USD Sale

In Stock! Special Order! Ships in 6+ weeks

Part # PRL-AF-4258

Record-breaking intake systems for track and street use have been developed using decades of experience as manufacturers and enthusiasts. If properly cleaned and maintained, our air filters should last a lifetime (with biodegradable cleaner and synthetic oil). Lighten your wallet while helping the environment! Using double-layer woven cotton with deep, thick pleats, PRL Motorsports oil filters enhance the filtering surface by 10% to 15%, allowing for more air to enter the combustion chamber while still providing excellent filtration. Particles as fine as 5 microns can be captured by this cotton filter. Each filter has a stainless steel mesh covering to protect it from dents and to increase its strength, ensuring that your PRL Motorsports air filter will withstand even the most extreme circumstances!

The inside parts of each filter are joined by the rubber base utilizing a four-step, low-pressure injection molding method. Contrary to other production techniques, which can restrict airflow by up to 25%, our procedure nearly eliminates rubber seepage for optimal airflow and aesthetics. Our elastic rubber base provides a reliable, airtight seal, dampens noise, and withstands millions of heating and cooling cycles. A specially formulated, lightweight filter lubricant forms an ionic bond with the stainless steel filter mesh and is meant to be friendly to car sensors. With the cotton remaining clear for maximum airflow, this positive charge repels negatively (-) charged dust particles from entering the filter and causes them to adhere to the stainless steel mesh.


  • Accord 1.5T & 2.0T (2018+ )
  • Civic 1.5T / 2.0 (2016-2021)
  • CR-V SRI (2017-2022)
  • Civic 1.5T & 2.0 (2022+ )
  • Acura Integra 1.5T HVI (2023+ )


  • Inlet: 4.00"
  • Total Height: 5.90"
  • Filter Height: 5.00"
  • Flange Height: 0.80"
  • Base Diameter: 4.50"
  • Top Cone Diameter: 4.00"

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In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.