Description
Protect your commercial vehicle compressed air system from corrosive moisture, oil sludge, and pressure buildup with the genuine WABCO Commercial Vehicle Air Dryer Assembly & Air Processing Unit. Engineered specifically for heavy-duty commercial trucks, luxury passenger coaches, and multi-axle freight haulers, this OEM-grade air treatment module filters contaminants, desiceates incoming air, and regulates multi-circuit system pressure. Saturated moisture, stuck purge valves, and oil contamination cause frozen air lines in winter, rapid valve seal degradation, and catastrophic air brake failure. This original WABCO assembly solves those failures directly. It combines high-efficiency desiccant cartridges, integrated pressure regulators, and automatic heating purge valves to deliver clean, bone-dry air directly to the reservoirs and active braking circuits.
Technical Parameters
| Category | Specifications & Technical Details |
| High-Efficiency Molecular Sieve & Coalescing Filtration | We combine deep coalescing filtration with high-density molecular sieve desiccant. As a result, it thoroughly removes moisture, oil mist, and micron-level impurities before high-pressure compressed air enters the reservoir. Moreover, the condensate dew point stays extremely low. |
| Integrated Multi-Circuit Protection Valve | We build in a four-circuit or multi-circuit protection valve. Consequently, when any brake or auxiliary air circuit develops a leak, it automatically cuts off and locks that circuit. Notably, this guarantees absolute safety of the main brake air pressure. |
| Intelligent Purge & Regeneration Mechanism | We precisely control the desiccant regeneration purge cycle. At the moment the compressor unloads, it uses reverse airflow from the dry reservoir to back-flush the desiccant cartridge. Therefore, it efficiently expels accumulated condensate and waste oil. |
| Self-Regulated 24V Internal Heating Element | We equip the unit with an integrated PTC 24V anti-freeze heating element. In extreme cold weather, it automatically activates heating. As a result, this completely prevents ice blockage at the exhaust valve port and drain valve. |
| Heavy-Duty Die-Cast Aluminum Housing | We precision-machine the housing from high-strength die-cast aluminum alloy. Consequently, it withstands system working pressure above 13 bar and high-frequency alternating pulse impact. Notably, it never leaks or cracks. |
Applicable Car Brands & Models
Common warning symptoms include:
Water and Oil in Wet Tanks: Moisture or milky oil-water emulsion discharging when manually bleeding the bottom drain valves of the air reservoirs.
Constant Air Purging / Leaking Purge Valve: Continuous air hissing or rapid popping noises from the purge valve under the dryer during engine idle.
Slow Pressure Buildup: The compressor takes an excessively long time to build system pressure due to stuck internal valves or clogged desiccant cartridges.
Frozen Air Lines in Cold Weather: Brakes sluggishly release or stick completely in sub-zero temperatures due to moisture freezing inside downstream valves.
We source all WABCO air treatment components directly through authorized OEM distribution channels. Each assembly comes in original WABCO factory packaging, featuring official part number stampings and serial codes to ensure authentic quality and immediate availability for wholesale customers.
Our 1-year warranty covers all internal valve seal failures, pressure regulation defects, electrical heater element burnouts, and manufacturing flaws under normal operating conditions. If an assembly fails within 12 months, we provide prompt replacement or warranty service.
Commercial fleets should replace the dryer cartridge annually or every 100,000–150,000 kilometers under normal operations. Heavy-duty applications with high compressor duty cycles may require cartridge replacement every 6 months to protect downstream EBS/ABS valves from contamination.
