WIX Filters 49959 Diesel Heavy Duty Air Filter

The WIX Filters 49959 Heavy Duty Diesel Air Filter delivers reliable protection for turbocharged diesel engines by removing dust, dirt, soot, and airborne debris from intake air in commercial trucks and industrial equipment. Designed as a corrugated primary air filter, it supports high airflow for continuous-duty fleet applications and is commonly installed in Freightliner M2 trucks, Western Star commercial vehicles, and medium-duty buses and fleet equipment requiring robust primary filtration. The filter uses flame retardant cellulose filtration media and measures 7.996 inches in height with an outer diameter of 12.854 inches at the top and 10.000 inches at the bottom; the inner diameter at the bottom is 0.750 inches and the top inner diameter is closed. It installs in a primary air cleaner housing and works to protect the engine and turbocharger by preventing contaminants from entering the intake. For maintenance and compatibility, consider the WIX 49910 Secondary Element for pairing, and note cross references to Donaldson P607960, Fleetguard AF4202, and Luber-Finer LAF3233FR. This part is widely used in heavy-duty diesel environments to support engine performance, fuel efficiency, and long-term reliability in Freightliner M2 platforms, Western Star trucks, and related commercial fleets.