1-800-719-4160
1-800-719-4160

Cat 301.4C 301.7D Replacement Idler

SKU: 379-2885
Weight: 35 lbs

Buy aftermarket tension idlers for the Caterpillar 301.4C mini excavators online and save versus buying from your local dealer.

Price: $371.69
Cat 301.4C 301.7D Replacement Idler
Cat 301.4C 301.7D Replacement Idler
Product Details

This is the replacement aftermarket tension idler for the Caterpillar 301.4C mini excavator as well as several other models.


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.


This idler also fits the following models:

  • 301.4C
  • 301.7D
  • 301.7DCR
  • 302.2D
  • 302.4D (must verify size, alternate option 386-0728)
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    Alternate Part Number: 456-6838

    Cat 301.4C 301.7D Undercarriage