The K&N 33-3024 is a reusable panel-style engine air filter built on K&N's washable High-Flow platform, using layered, oiled cotton gauze media. The manufacturer says it is designed for high airflow while keeping filtration levels high enough to protect the engine. It drops into the factory air box of the 2014 Mazda 6 2.2L inline-four diesel, so no housing modification is needed. Compared with a disposable paper panel filter, it can be cleaned, re-oiled, and reinstalled for the life of the vehicle, and the manufacturer backs it with a No-Hassle Lifetime Limited Warranty. Owners on user forums generally report that the gains are modest and hard to feel, so buy this filter for reusability and airflow rather than dramatic power. Search terms this filter answers include 2014 Mazda 6 diesel drop-in air filter, reusable panel air filter 2.2 diesel, and K&N 33-3024 install.
Fitment and installation are straightforward for a home mechanic. The manufacturer lists this filter for the 2014 to 2017 Mazda 6 L4-2.2L diesel, and other listings show different model years, so confirm your VIN with the manufacturer before ordering. Owners describe the airbox as being on the driver side, held by two fasteners that unsnap, with an "Up" marking on the filter to guide orientation. The manufacturer's general installation hints suggest disconnecting the intake tube if the lid is hard to maneuver, holding the filter in place while reinstalling the lid, and confirming that every lid tab is fully seated. User forums also warn that over-oiling can migrate to the mass airflow sensor and trigger check-engine lights, so re-oil lightly and keep the filter in the airbox after cleaning.
The manufacturer lists this filter for the 2014 to 2017 Mazda 6 L4-2.2L diesel and states it is designed to drop into the factory air box. Because application listings vary by model year, confirm your VIN with the manufacturer before ordering.
The manufacturer offers a No-Hassle Lifetime Limited Warranty on this filter. Warranty terms can change, so check the manufacturer's current terms for limitations.
Owners on user forums report that excess oil can migrate to the mass airflow sensor and cause problems. Keep oil application light after cleaning and wipe away any excess before reinstalling.
This is a quick, tool-light job. Owners describe the airbox cover as secured by two fasteners that unsnap, after which the old filter lifts out and the K&N drops in with the "Up" marking facing the correct way. The manufacturer's general hints recommend disconnecting the intake tube if the lid is awkward to move, holding the filter in place while you reinstall the lid, and checking that all lid tabs are fully seated so the box cannot pop open while driving. Keep dirt out of the airbox while the lid is off, since any debris that bypasses the filter goes straight into the engine.
