The K&N 33-2426 is a washable, reusable drop-in replacement for the factory airbox filter on the 2009-2014 Hyundai Genesis V8. The manufacturer lists it for both the 4.6L and 5.0L V8 in that range. Its layered, oiled cotton media is designed to increase airflow while still capturing contaminants, and the manufacturer rates its filtration efficiency at up to 99%. For a Genesis 4.6 V8 owner searching for a reusable cotton gauze air filter, a drop-in K&N gives a real intake upgrade without modifying the airbox or the intake tube.
The purchase case rests on lifetime cost. Instead of replacing a disposable paper element at every service, you clean and re-oil this one and reuse it. The manufacturer estimates savings of up to $125 compared with buying disposable OE-equivalent filters over 200,000 miles of highway driving. It is also backed by the K&N Million Mile Limited Warranty, which makes the higher upfront price easier to justify than a cheap replacement paper filter. Installation is a straightforward Genesis 4.6 V8 air filter swap, so the upgrade fits a weekend DIY schedule.
The manufacturer's application listing for this filter covers the Hyundai Genesis V8 4.6L/5.0L fuel-injected engines from 2009 through 2014, so the same catalog number is listed for both displacements in that range. Confirm your engine and model year before ordering.
The manufacturer describes this element as washable and reusable, and it is covered by the K&N Million Mile Limited Warranty.
The manufacturer states that a washable K&N can save up to $125 versus buying multiple disposable filters, based on OE filter MSRP over 200,000 miles of highway driving.
This is a drop-in replacement, so the job is removing the factory filter from the airbox, seating the K&N in its place, and closing the lid. The manufacturer's install sheets for comparable K&N drop-in filters call for cleaning the airbox sealing surfaces before installing the element and confirming it seats fully so the lid closes with a proper seal. Do not force the lid closed if the filter is out of position, since that can crack the airbox or leave an unfiltered gap. Keep the factory airbox and intake components, because the manufacturer advises against discarding the stock intake system. Check the instruction sheet for this specific part number for the exact tool list and steps, as I could not confirm the procedure for 33-2426 itself.
