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Komatsu Excavator Thumb Kits

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Komatsu Excavator Thumb Kits parts list
Image Fits Model Description Part # Price Product Details
Excavator Counterweight PV4700, 200-Series See Details 200-Series Excavators Manual Bucket Thumb Kit PV4700
From $5,815.00
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Heavy-duty bucket thumb for backhoes, PVE See Details Case: 580K, 580SK, 580L, 580SL, 580M, 580SM, 580N, 580N, 590SN. FD-NH: 550, 555, 555B, 555C, 555D, 555E, 655, 655B, 655C, 655D, 655E, 675E, 575E, LB75, LB75B, LB90, LB90B, LB110, LB110B, B110, B110B, B90B, B95, B95B, B95C / John Deere: 310, 310A, 310 Mechanical Thumb Attachment (Heavy Duty) PV4200
$2,513.00
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Mechanical thumb for 70-series excavators, PV4300 See Details Excavators - 15,000 lbs to 22,000 lbs 12" to 40" Buckets Mechanical Thumb PV4300
From $3,220.00
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Hydraulic Thumb for 70-Series Excavators (15K–22K lbs) | Made in USA See Details Excavators - 15,000 lbs to 22,000 lbs 12" to 40" Buckets Hydraulic Thumb PV4301
From $4,765.00
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PVE 200 Series hydraulic excavator thumb kit PV4701 — Made in USA See Details 200 Series, 40000-53000 lb Excavators Hydraulic Thumb Kit PV4701
From $7,984.00
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Manual excavator thumb for mid-class excavator — PV4500 See Details 120 Series, 24000-36000 lb Excavators Manual Thumb PV4500
From $4,211.00
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Excavator Hydraulic Thumb Kit - Made in USA See Details 120-Series Excavators (24,000 lbs to 36,000 lbs operating weight, 18" to 50" buckets) Hydraulic Thumb PV4501
From $4,795.00
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0 Mechanical Thumb for 160-Series Excavators (30K–40K lbs) | Made in USA See Details Excavators - 40,000 lbs to 46,000 lbs 24" to 58" Buckets Mechanical Thumb PV4600
From $4,750.00
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Hydraulic Thumb for 160 Series Excavators, 24"–58" Buckets, 30K–40K lbs Machines See Details Excavator Size: 40,000 lbs to 46,000 lbs | 24" to 58" Buckets Hydraulic Thumb Attachment PV4601
From $6,784.00
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Mechanical and hydraulic thumb kits for Komatsu excavators, covering machines from 15,000 lbs up to 53,000 lbs across 70-Series, 120-Series, 160-Series, and 200-Series equipment. All thumbs are Made in USA and engineered for heavy-duty field performance with bucket ranges from 12" to 58" wide.

Fits Models At A Glance

  • 70-Series Excavators: 15,000–22,000 lbs machines, 12"–40" buckets (e.g. PC70, PC78)
  • 120-Series Excavators: 24,000–36,000 lbs machines, 18"–50" buckets (e.g. PC120, PC128)
  • 160-Series Excavators: 40,000–46,000 lbs machines, 24"–58" buckets (e.g. PC160, PC180)
  • 200-Series Excavators: 40,000–53,000 lbs machines (e.g. PC200, PC210, PC220)

Key Notes

  • Thumb Types Available: Both mechanical and hydraulic configurations offered for 70-, 120-, and 160-Series machines
  • Bucket Compatibility: Sized by bucket width — confirm bucket width before ordering
  • Weight Class Fitment: Each thumb kit is rated by machine operating weight — verify your machine's weight class
  • Country of Origin: Made in USA across all thumb kit SKUs
  • Counterweight Option: Counterweight available for 200-Series machines (40,000–53,000 lbs)

Why Choose Broken Tractor

  • ✅ Made in USA thumb kits for dependable field performance
  • ✅ Wide size range covering most Komatsu excavator classes
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH

Frequently Asked Questions

What thumb fits a Komatsu PC70 or PC78 excavator?

The Komatsu PC70 and PC78 fall in the 70-Series class, which takes a thumb built for 15,000 to 22,000 lbs excavators running 12 inch to 40 inch buckets. Broken Tractor offers this size as a mechanical thumb (SKU PV4300) or a hydraulic thumb (SKU PV4301). Confirm your bucket width and machine operating weight before ordering.

Which thumb kit fits a Komatsu PC120 or PC128?

The Komatsu PC120 and PC128 use the 120-Series thumbs, sized for 24,000 to 36,000 lbs machines with 18 inch to 50 inch buckets. We carry a manual thumb (SKU PV4500) and a hydraulic thumb kit with an 18 inch width and 50 inch tines (SKU PV4501). Check your bucket width so the thumb matches your setup.

What size thumb fits a Komatsu PC160 or PC180 excavator?

The Komatsu PC160 and PC180 take the 160-Series thumbs, listed for excavators from 40,000 to 46,000 lbs with 24 inch to 58 inch buckets. Broken Tractor offers a mechanical version (SKU PV4600) and a hydraulic version (SKU PV4601). Verify your machine's operating weight and bucket width before you order.

Is there a hydraulic thumb kit for a Komatsu PC200, PC210 or PC220?

Yes. The hydraulic thumb kit SKU PV4701 is built for 200-Series excavators from 40,000 to 53,000 lbs, which includes the Komatsu PC200, PC210 and PC220. A matching 200-Series counterweight (SKU PV4700) is also available for these machines.

How do I choose the right thumb kit for my Komatsu excavator?

Match the thumb to your excavator's operating weight class and the width of the bucket you run, since each kit is rated by both. For the 70-, 120- and 160-Series classes you can choose a mechanical or a hydraulic thumb, and every thumb kit we carry is Made in USA. If you are unsure of your machine's weight class or which kit fits, call (800) 909-7060 and the parts team can help confirm fitment.

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Product: Category: Komatsu Excavator Thumb Kits Brand: Head Title: Komatsu Excavator Thumb Kits | Broken Tractor