The K&N 33-5067 is a washable, reusable panel filter built for the left-side intake box of the 3.3L twin-turbo V6 in the Kia Stinger GT. K&N's washable, reusable High-Flow filters use layered, oiled cotton media that the brand engineers for better airflow and contaminant capture. Its cotton gauze layers are treated with a tacking agent, so the filter traps debris while letting air through.
The case for this filter over a disposable paper element is reuse. The manufacturer puts the cleaning interval at about 75,000 miles under normal highway driving. One enthusiast argued it was worth buying because the 3.3TT has no true cold air intake available, and said the filters should improve throttle response and need no replacement for a long time, with only cleaning required. Expectations should stay grounded: the manufacturer's up-to-99% efficiency rating is not a horsepower figure, and no power gain has been confirmed in this research.
Verify your model year before ordering. Catalog listings show 2018-2023 applications, while the manufacturer's page lists 2018-2026, and owners on user forums have reported that K&N had not confirmed 2019 drop-in fitment. Installation is a drop-in swap rather than a box modification. Owner-made video guides show a single intake drop-in filter exchange, which also applies to the opposite side on twin-turbo cars. Owners note that the part number for the left filter is 33-5067 and the right filter is 33-5068.
The manufacturer states the filter needs cleaning about every 75,000 miles under normal highway driving. Harsher or dustier conditions will call for more frequent checks.
Owners on user forums report that K&N had not confirmed drop-in fitment for the 2019 model year. Confirm your model year with the manufacturer before ordering.
The manufacturer lists the 33-5067 as the left-side airbox filter. Owners on user forums identify 33-5068 as the right-side part for the twin-turbo setup.
This is a drop-in replacement, so the job centers on the stock airbox rather than any tuning or cutting. Owner video guides show the process as a simple filter exchange on the Stinger's intake. Confirm you have the left-side part before opening the box, and keep the filter oiled to the manufacturer's stated re-oiling amount when you service it. Tool requirements were not confirmed in this research, so check the manufacturer's install sheet before starting.
