This component is an air dryer assembly for the vehicle's air brake system, responsible for removing moisture and contaminants from the compressed air supply. It ensures the air brake system operates reliably and prevents damage from water or oil. Failure can manifest as a spongy brake pedal, air leaks, or a frozen brake system in cold weather.
Always verify with serial number before ordering.
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Alternate part numbers that interchange with Volvo 20884103
Fitment: Volvo Trucks: FH12: 2002> 2005, FH13: 2006> 2007, FH16: 2003> 2005, FM9: 2002> 2007, FM12: 2002> 2005, FM13: 2006> 2007
Always replace brakes in axle sets. Bed-in new brake pads with 8–10 moderate stops from 40 km/h. Check disc runout with a dial gauge — maximum 0.1 mm. Inspect caliper slides and pistons when replacing pads.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A hissing sound from the air system or a gradual loss of air pressure are early indicators of a failing air dryer. If ignored, moisture can build up, leading to sluggish brake response or complete brake system malfunction. This can compromise the vehicle's ability to stop safely.
Ensure the air system is fully drained of pressure before beginning disassembly. Overtightening the fittings can damage the threads or the dryer housing.
Always inspect the air compressor output and air lines for any signs of oil or excessive moisture contamination.