Crankshaft Remachined Caterpillar 638 9S123 Stroke: 6.00” Rod: 3.000” Main: 3.50

© 2025 RF Engine a Nivel HD brand. All rights reserved. All manufacturer names, numbers, symbols & descriptions are for reference purposes only. It is not implied in any way that the items are a product of the manufacturer referenced. OEM makes are registered trademarks of their respective owners.