The K&N VF2057 is a washable, reusable cabin air filter sized for the 3.5L V6 Lexus IS350. It replaces the factory disposable element with a thermally bonded, pleated synthetic media that the manufacturer says traps dust, pollen, mold, and bacteria, and it is electrostatically charged to hold fine dust. Because it is washed and reinstalled rather than repurchased, it costs less over time than a stream of disposable replacements, and the manufacturer notes that increased airflow helps heating and cooling efficiency. Owners on user forums report that a neglected cabin filter produces a musty smell at the vents, so keeping this element clean is worth the few minutes it takes.
Search terms this part answers include K&N VF2057 Lexus IS350 cabin filter, reusable IS350 3.5L V6 cabin air filter, and IS350 glovebox cabin filter replacement. It drops into the factory air box behind the glovebox, so no housing modifications are needed. Owners on user forums describe removing the small L-shaped shelf inside the glovebox, then lifting out the filter door to reach the element. Confirm your model year against the manufacturer's application list before ordering, since its IS350 coverage is broader than the product name suggests.
The manufacturer's application listing for the 3.5L V6 IS350 includes 2018, while the product name lists 2014 through 2017. Confirm your exact year and submodel with the manufacturer before ordering.
The manufacturer describes this filter as washable and designed to be reinstalled after cleaning, so it is intended as a reusable element rather than a disposable one. Follow the manufacturer's cleaning guidance and make sure the filter is fully dry before reinstalling it.
Owners on user forums report that an neglected cabin filter can cause a musty odor from the air vents, particularly at idle with the A/C running.
This is a glovebox-access job that requires little or no tooling. The manufacturer states it typically installs in less than five minutes with no tools, while its install listing shows 10 to 20 minutes with a screwdriver, so plan for the longer time if this is your first change. Empty the glovebox, remove the shelf bracket, pull the filter door out and up, and release the plastic clips to slide the old element out. Install the new filter in the same orientation as the old one, then reverse the steps. Owners on user forums suggest a quick vacuum of the housing while the filter is out.
