Please consider 23472590 - Ingersoll Rand 23472590 OEM Motor Pulley Sheave for 2545K10 1B10.4x1.375 as a replacement.
54436621 is a replacement drive pulley/sheave used on the Ingersoll Rand 2545K10 three phase reciprocating air compressors. This pulley/sheave attaches to the motor. There is a single groove for a B size v-belt.
54436621 is designed to fit the following air compressors:
This is an OEM part from Ingersoll Rand.
Part #: 32307084
Part #: 32307118
Part #: 32307126
Part #: 23859721
Part #: 23860018