301.12.0001 Silencer for Air Processing Units

What does an air processing unit silencer do?

The air processing unit silencer serves a critical role in the pneumatic brake system of heavy commercial vehicles. It is specifically fitted to the air dryer or air processing unit to muffle the high-pressure noise released during the air regeneration and purge cycles. By managing this discharge, the component helps maintain a controlled environment within the braking system.

Compatible vehicles and engines

This component is compatible with Volvo models including FM12, FH13, and FMX, as well as Mack Granite and Renault Trucks Premium or Magnum series. It is also widely used in other heavy-duty applications such as Scania, MAN, Mercedes-Benz, and Iveco vehicles. This silencer ensures that while moisture and debris are expelled, environmental contaminants are prevented from entering the unit.

Installation and maintenance

For optimal performance, technicians should inspect the silencer for signs of clogging or excessive noise during the purge cycle. A malfunctioning silencer can lead to longer regeneration times or increased moisture in the brake lines. Regular inspection during pneumatic system maintenance helps prevent contamination of the drying cartridge and ensures long-term reliability.

Troubleshooting guidance

Check the compatibility list to ensure this component meets your specific vehicle requirements.

OE cross-reference

301.12.0001 (Air Processing Unit Silencer) is the equivalent of the DAF, Faun, Fruehauf, Goldhofer, Iveco, Knorr-Bremse, Kögel, Krone, Liebherr, MAN, Mercedes-Benz, Neoplan, Nissan Ud Truck, Renault Trucks, Scania, Setra, Solaris, Van Hool, Volvo and WABCO OE numbers. This part directly replaces DAF OE numbers 1193486, 1207895. It also replaces Faun OE number 1057566, Fruehauf OE number K00417301, Goldhofer OE number 164787, Iveco OE numbers 41019441, 42122268, 4823437, Knorr-Bremse OE numbers 0484210001, 0484210006, 484210001, 484210006, Kögel OE number 331185, Krone OE numbers 505820556, 5058205560, Liebherr OE numbers 502657208, 502983908, 502983977, MAN OE numbers 81521016152, 81521016159, 81521016180, 81521016240, 81521016274, 81521016280, 81521016288, 85500011965, 99100360052, Mercedes-Benz OE numbers 0004300370, 0004300470, 0004300870, 0004302370, 0004302570, Neoplan OE numbers 11018653, 110253000, 110273308, 112235000, Nissan Ud Truck OE number 14855D6301, Renault Trucks OE numbers 5000805400, 5001834805, 5021170066, 7401197476, Scania OE numbers 1543187, 1932667, 339877, Setra OE numbers 8025000495, 80250008570, Solaris OE numbers 1102530000, 1122350000, Van Hool OE number 637208210, Volvo OE numbers 1197476, 21348893, 24427579 and WABCO OE number 4324070600.