51957751 Ingersoll Rand OEM Drive Coupler

The 51957751 Ingersoll Rand OEM Drive Coupler is an original equipment elastomeric coupling for Ingersoll Rand portable air compressor platforms. This coupling sits between the diesel engine and compressor airend, providing torsional damping and misalignment compensation in the drivetrain.

The 51957751 serves IR portable compressors used across construction, pipeline, mining support, and industrial applications. These machines accumulate thousands of operating hours in harsh conditions, and the drive coupler is a wear item that requires periodic replacement to maintain drivetrain integrity. Continuing to operate with a degraded coupler risks damage to engine bearings, airend seals, and shaft surfaces.

This part drops directly into the factory mounting position. During replacement, inspect both the driving and driven hubs for scoring, corrosion, or dimensional wear. Clean shaft surfaces, verify key fit, and align to factory tolerances. Confirm normal vibration levels after startup before releasing the machine for service.

Available from Stark Industrial Products with priority shipping for service-critical orders.