The Ingersoll Rand 30210199 crankpin bushing goes in between the crankshaft and piston rod on the 2475 reciprocating compressor pump.
This bushing is also included in the 32319469 overhaul kit and the bearing/connecting rod kit. This is an OEM part from Ingersoll Rand.
Part #: 32301426
Part #: 32170979
Part #: 32305880
Part #: 2475-LOLS
Part #: 32301517
Part #: 32301434