The K&N 33-5054 is a drop-in, oiled cotton-gauze replacement for the factory engine air filter on the 3.0L V6 fuel-injected 2016 Cadillac CT6, sized for the right-side airbox. Left Side Airbox is the companion position, and K&N's own CT6 page lists this number for 2016 as well as later model years. Because the manufacturer describes its K&N filters as washable/re-usable, the purchase case rests on lifetime cleaning rather than repeated disposable buys. Owners searching for a 2016 CT6 3.0 V6 right airbox washable air filter or a CT6 3.0L drop-in high-flow intake filter will find this the matching part.
Against a stock paper element, the appeal is airflow and reuse; against cheaper disposables, it is the reusable element. The 3.0 engine filters are the easy job on the CT6, with ten cover screws to remove, according to owners on user forums, so a periodic clean-and-reoil is a realistic DIY task. Expect the lid to need a firm seal, and the clips will take slightly more pressure than with an OEM foam-sealed filter. Check that the element is seated in the lid groove before fastening, and stop if the airbox begins to bend.
No. The manufacturer lists 33-5054 for the right-side airbox on the 2016 CT6 3.0L V6, and the left-side position uses 33-5053.
The manufacturer describes its K&N air filters as washable and reusable, and it publishes separate cleaning guidance on its website. Follow that guidance, since over-oiling can risk contamination of the mass airflow sensor.
Owners on user forums describe the 3.0L engine filter as a straightforward swap: remove the airbox cover's ten screws, lift out the old element, and drop in the K&N with its sealing surfaces clean. Reinstall the lid while holding the filter in its groove with your fingers so it doesn't fall out. Fasten the clips only after the lid sits fully on the base, and don't force the clips if the airbox flexes, because that usually means something is misaligned. Also note that owner forums raise concern about excess filter oil reaching the mass airflow sensor, so wipe off any excess oil after cleaning.
