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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 to 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 for FREE when you check out online.
SKU: 240-6304
Weight: 95 lbs
Price: $572.00
Availability: Currently Out of Stock

Rubber tracks and wear parts are sold individually unless specified in the details. We offer free shipping across the USA when you order online and ship to a commercial address. *Some restrictions apply.

240-6304 Tension Idler Assembly

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® 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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