Bendix Commercial Vehicle Systems part, model QE296! They're known for air brake and control systems.

Remanufactured by Bendix CVS" indicates it's a reconditioned part.

The 3558072X is a remanufactured heavy-duty air brake compressor. Primarily used in commercial vehicles with Cummins L10/N14 engines, this unit (often manufactured by Haldex/Holset, model QE296) is an engine-driven, water-cooled single-cylinder compressor that delivers 13.2 CFM.