A0004300969 – Air dryer cartridge, air dryer, liquid separator filter OE number for MERCEDES-BENZ

Adhering to a strict preventive maintenance schedule is crucial to keeping a vehicle’s air system clean and ensuring superior performance.

Depending on vocation, we recommends a one-, two-, or three-year air dryer cartridge replacement on vehicles equipped with a compressor:

• For severe service applications, such as residential refuse trucks or school buses, the air dryer cartridge should be replaced every year or 100,000 miles.
• For pick up and delivery operations, or for double- and triple-trailer line haul trucks, every two years or 200,000 miles is recommended.
• Line haul operations using a single trailer should swap the filter out every three years or 300,000 miles.

Recommended intervals for trucks equipped with not good compressors are six months (50,000 miles), one year (100,000 miles), and two years (200,000 miles), respectively. 

More frequent intervals may be required depending on a vehicle’s age, its compressor condition, the operating environment, the vehicle’s vocation, and its usage. In conjunction with the guidelines, fleets can determine the functionality of their filters by checking for moisture in the air brake system monthly. If moisture is present, the air dryer cartridge may require replacement.

“In addition to the guidelines for maintenance noted, fleets who acquire used trucks should change the air dryer cartridge as part of their prep work to bring the truck into operation,” . Changing the cartridge and sticking to a maintenance schedule, like our 1-2-3 approach, helps ensure long life and improved reliability of the air system, critical components, and the truck itself. Bottom line, the right air dryer and cartridge can help a fleet and owner-operator lower their operating costs.