Belt Tensioner Description
This Belt Tensioner is indexed for Komatsu PC120-5; Komatsu PC120-6; Komatsu PC128US-2; Komatsu PC128UU-2. Compare reference number 6731-61-4510 against the label on your existing Komatsu component before ordering.
Additional cross references on file: 6736-61-4120, 6732-62-4130, 6731-61-4140. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.




