2651779049 Atlas Copco OEM Drive Coupler

The 2651779049 Atlas Copco OEM Drive Coupler is a factory-specified coupling for Atlas Copco portable air compressor platforms. Atlas Copco uses

Atlas Copco portable compressors are built for demanding construction, mining support, and industrial applications worldwide. The drive coupler in these units is a Reich Arcusaflex-style elastomeric coupling that absorbs torsional vibration from the diesel engine while maintaining smooth torque transfer to the compressor airend. When this element wears, operators notice increased vibration, drivetrain noise, or inconsistent air delivery under load.

The 2651779049 is a direct OEM replacement that matches the factory coupling’s elastomer durometer, hub geometry, and bolt pattern. During installation, inspect both hubs for wear, clean all shaft surfaces, and align per Atlas Copco’s service manual. Verify vibration readings after startup to confirm proper installation.

Stark Industrial Products stocks Atlas Copco OEM drive couplers with same-day shipping on in-stock parts.