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The Mack Air Brake Dryer removes moisture from compressed air before it reaches the brake system's valves and chambers, and this unit is offered as a remanufactured replacement. Rebuilding the core allows replacement of the desiccant cartridge and internal seals instead of scrapping the full housing. The Mack 85041210 uses the original equipment dryer mounting location, so the existing air lines and electrical connection carry over unchanged. Choosing the remanufactured version keeps moisture control in the air system at a lower cost than a new assembly.
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