Free Shipping to commercial address. *Restrictions apply


Caterpillar 301.5 301.6 301.8 Sprocket

Cat301.5 Sprocket 139-4304
Caterpillar 301.5 301.6 301.8 Sprocket
Buy aftermarket sprockets for your Cat 301.5 online at Rubbertrax and we will ship them directly to your door. Save online and skip the trip to the dealer. This 139-4304 sprocket ships for free when you check out online and ship to a commercial address. We have warehouse locations across the USA for fast delivery times.
SKU: 139-4304
Weight: 10 lbs
Make: Cat
Shipping: Fast and Free!
Price: $180.00

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.

139-4304 Sprocket Specifications

This sprocket is designed for earlier serial breaks, so if you have a newer model please verify your specs. This is the aftermarket replacement drive sprocket for the following Caterpillar mini excavator models:

  • Cat 301.5 (S/N 3Y2)(if you have MNH serial numbers please verify specs)
  • Cat 301.6 (please verify specs for MY6 serial break)
  • Cat 301.6C
  • Cat 301.8
  • Cat 301.8C

We always suggest changing your sprockets and rubber tracks at the same time as these parts are designed to wear together. Maximize the lifespan of your undercarriage.

139-4304 Sprocket specifications:

  • 19 Teeth
  • 9 Bolt Holes
  • Inside Diameter: 6 1/2 Inches
  • Outside Diameter: 11 1/2 Inches

OEM Part Numbers

  • Caterpillar® Dealer Part Number: 139-4304 superseded by 535-9004

Guaranteed fit Models

This sprocket (139-4304) is guaranteed to fit:

  • Caterpillar®301.5
  • Caterpillar® 301.6
  • Caterpillar®301.6C
  • Caterpillar®301.7CR
  • Caterpillar®301.8
  • Caterpillar®301.8C

Optional Sprockets

There are no known alternate part listings. This 139-4304 (535-9004) sprocket is guaranteed to fit.

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