Rubber tracks and wear parts are sold individually unless specified in the details. We offer free shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.
This is the aftermarket replacement rear idler for the following Cat mini excavators:
The tension idler installs on the opposite end of the undercarriage from the sprocket and this is the part that expands out as you pump the grease in the tensioner to tighten the rubber track. Some people refer to this larger roller as the pulley.
This idler (172-2100) is known to fit:
Free shipping from one of our seven warehouses.*
* Restrictions apply. See details at checkout.