The Bobcat® T-64, T-66, and T-76 are all built on the same undercarriage platform. Most of the parts are interchangeable with only a few variations to the T-76 considering the track is longer for more footprint and less ground pressure.
There are serial breaks and optional undercarriage styles such as the solid mount versus the torsion, or suspension-type undercarriage. The parts are not interchangeable across those two undercarriage styles so you must verify before ordering online. Navigate the serial breaks below for your T66 compact track loader and if you cannot locate the part you need with confidence call and we can guide you to exactly what you need for your specific T66 for each undercarriage type and every serial number break.