Cat Excavator Thumb Kits

Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	200-Series Excavators	Manual Bucket Thumb Kit	PV4700	From $5,701.00	View Info
	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	$2,465.00	View Info
	See Details	Excavators - 15,000 lbs to 22,000 lbs 12" to 40" Buckets	Mechanical Thumb	PV4300	$3,220.00	View Info
	See Details	Excavators - 15,000 lbs to 22,000 lbs 12" to 40" Buckets	Hydraulic Thumb	PV4301	$4,844.00	View Info
0	See Details	Excavators - 24,000 lbs to 36,000 lbs 18" to 50" Buckets	Mechanical Thumb	PV4500	$4,188.00	View Info
0	See Details	Excavators - 40,000 lbs to 46,000 lbs 24" to 58" Buckets	Mechanical Thumb	PV4600	$4,750.00	View Info
	See Details	Excavator Size: 40,000 lbs to 46,000 lbs \| 24" to 58" Buckets	Hydraulic Thumb Attachment	PV4601	$6,651.00	View Info

Mechanical and hydraulic thumb kits for Caterpillar excavators, covering a wide range of machine weight classes from 15,000 to over 46,000 lbs. Both mechanical and hydraulic configurations are available for 70-series, 120-series, and 160-series excavators, all made in the USA and sized to match standard Cat bucket widths.

Fits Models At A Glance

70-Series Excavators: 15,000–22,000 lb machines, 12"–40" buckets (e.g. Cat 308, 311, 312, 315 range)
120-Series Excavators: 24,000–36,000 lb machines, 18"–50" buckets (e.g. Cat 320, 323 range)
160-Series Excavators: 40,000–46,000 lb machines, 24"–58" buckets (e.g. Cat 330, 335 range)
200-Series Excavators: 40,000–53,000 lb machines (counterweight fitment)

Key Notes

Thumb Types: Mechanical and hydraulic options available depending on series and application
Bucket Range: Kits sized from 12" to 58" buckets depending on machine class

Origin:

Weight Class Sizing: Select by machine operating weight to ensure proper thumb geometry and pin alignment
Counterweight: 200-series counterweight also available in this category

Why Choose Broken Tractor

✅ USA-made thumbs built for demanding excavator work
✅ Mechanical and hydraulic options across all major Cat series
✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH