This is the replacement aftermarket bottom roller for the JCB 803. We sell the rollers individually but check your entire undercarriage and order all the parts you need at one time to save on shipping. Consider changing all of the rollers at the same time for even wear.
This is the roller at the bottom of the undercarriage that runs through the guide of the track and carries the weight of the machine across the ground.
We also carry the rubber track for this model.
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