Atlas Copco Aftercooler ZR4 5 6-1621724508, ZR4 1621724608

Aftercooler cores for Atlas Copco ZR4, ZR5 and ZR6 compressors, including 1621724508, are listed by industrial parts sellers as compressor aftercooler heat exchangers that lower discharge air temperature and improve moisture removal after compression. Compatible replacements for these ZR series models are featured in parts catalogs.

In industrial compressed air systems, the air compressor cooler functions as a primary thermal regulation component. Proper compressor cooler operation reduces discharge temperature, improves moisture separation, and supports long-term system reliability.