Precision Machining and Surface Finish:
Pins are machined to very tight tolerances to ensure a perfect fit with their bushings. A smooth, hardened surface finish is critical to minimize friction and reduce wear on both the pin and the bushing.
This 521-4181 pin is used for 301.5 301.6 301.7 301.8 excavator.






Related part number:
139-6384
344-5674
3B-8489
521-4059
521-4060
521-4180
521-4181
576-4466
576-4467
578-3860
604-7159
8T-3647
8T-6869











