Rubber tracks and wear parts are sold individually unless specified in the details. We offer fast shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.
226-4049 Idler Assembly
The 553-5510 is interchangeable for the 301.5 through the 302CR Caterpillar® mini excavator series listed below. This idler assembly is fully assembled with bushing and seals and arrives ready to be installed using your existing mounting brackets. This is the aftermarket tension idler designed for the following Caterpillar® mini excavator models:
- Caterpillar® 301.5
- Caterpillar® 301.6
- Caterpillar® 301.8
- Caterpillar® 301.9
- Caterpillar® 301.7CR
- Caterpillar® 302CR
This is the larger roller wheel that pushes out as you grease the tensioner to tighten the rubber track.
The idler is installed on the opposite side of the undercarriage from the sprocket.
This idler is for the specific serial number range listed in your parts manual. Please verify the OEM part number.
OEM Part Numbers
- Caterpillar® Dealer Part Number: 553-5510
Optional Part Availability
Verify your serial number as there are several idler options in this series depending on original setup.
Related Cat 301.5 301.6 301.8 Undercarriage
