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Cat 301.4C 301.7D Replacement Idler

Cat 301.4C 301.7D Idler 379-2885
Rubbertrax
Cat 301.4C 301.7D Replacement Idler
Buy aftermarket tension idlers for the Caterpillar 301.4C mini excavators online and save versus buying from your local dealer. This is known as original part number 379-2885 from the dealer. Order online today and get FREE shipping during checkout.
SKU: 379-2885
Weight: 35 lbs
Make: Cat
Price: $390.00

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This is the replacement aftermarket tension idler for the Caterpillar 301.4C mini excavator as well as several other models below. This idler now ships without the mounting arms that slide into the track frame so that you can use your existing mounting brackets for a perfect fit.

This idler also fits the following models:

  • Caterpillar 301.4C
  • Caterpillar 301.7D
  • Caterpillar 301.7DCR
  • Caterpillar 302.2D(must verify size, alternate option 386-0728)
  • 302.4D (must verify size, alternate option 386-0728)

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. Idlers guide the track in and out of the track rollers, support the machine's weight, and provide a way to control track slack and tension.


Alternate Part Numbers

  • Caterpillar® Dealer Part Number: 379-2885, 456-6838

Guaranteed Fit

This idler assembly (379-2885) is guaranteed to fit:

  • Caterpillar 301.4C
  • Caterpillar 301.7D
  • Caterpillar 301.7DCR
  • Caterpillar 302.2D (must verify size, alternate option 386-0728)
  • 302.4D (must verify size, alternate option 386-0728)

Idler Options

There are no known alternate part listings. This 379-2885 idler is guaranteed to fit.

Cat 301.4C 301.7D Undercarriage