46578019D Doosan OEM Drive Coupler

The 46578019D Doosan OEM Drive Coupler is a coupling for Doosan portable air compressor platforms. Doosan Portable Power (formerly Doosan Infracore Portable Power) manufactures diesel-driven portable compressors for construction, utility, and industrial applications, and this coupling provides the engine-to-airend connection in select Doosan models.

Doosan portable compressors are built for jobsite durability with features like cool-box enclosure designs and heavy-duty frames. The drive coupler in these units is a Reich Arcusaflex-style elastomeric coupling that absorbs the torsional vibration generated by the diesel engine, preventing it from reaching the compressor airend. When the coupling element wears, operators notice increased frame vibration, drivetrain noise, and reduced compressor performance.

The 46578019D is a direct OEM replacement for the factory coupling. During installation, clean all shaft surfaces, inspect hubs for wear, and align per Doosan’s service procedure. Confirm normal vibration levels after startup.

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