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Caterpillar 304.5 305.5 Idler 240-6304

Cat 240-6304 Idler 305.5
Rubbertrax
Caterpillar 304.5 305.5 Idler 240-6304
Buy the aftermarket Caterpillar 304.5, 305.5 replacement tension idler assembly online at Rubbertrax and save time and money. This is a complete replacement idler fully assembled. Save online and skip the trip to the dealer. This 240-6304 idler ships FREE when you check out online.
SKU: 240-6304
Weight: 95 lbs
Price: $695.00

Free Shipping Across the USA

The Cat® 304 and 305 series use interchangeable idlers and part numbers 240-6304 and 241-5972 are known to be interchangeable on these models. This is the aftermarket replacement tension idler designed for the following Caterpillar® mini excavators:


  • Caterpillar® 304
  • Caterpillar® 304CR
  • Caterpillar® 304.5
  • Caterpillar® 305
  • Caterpillar® 305.5
  • Caterpillar® 305.5E
  • Caterpillar® 305CR
  • Caterpillar® 306 (Serials MXH001-MXH1089)
  • Caterpillar® 306E (Serials MXG1150 & UP)

This is the larger idler roller on the opposite end of the undercarriage from the sprocket. There are two idlers per machine, one on each side.

Alternate Part Numbers

  • Cat® Dealer Part Number: 240-6304, 240-6302, 353-5578, 241-5973, 241-5972

We now carry the complete undercarriage for the Caterpillar® 304.5 mini excavator including the rubber tracks.


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