Case 590 Turbo, 590SL Extendahoe Dipper Arm Parts

Inner and outer dipper sticks, boom-to-dipper pins, bushings, wear plates, and hardware for Case Extendahoe backhoe loaders, covering new and used extendible dipper components across the 580 and 590 Super series.

Fits Models At A Glance

• 580 Series: 580B, 580C, 580D, 580 Super E, 580K, 580 Super K, 580L, 580 Super L, 580M, 580 Super M, 580N, 580 Super N
• 590 Series: 590 Turbo, 590 Super L, 590 Super M, 590 Super N

Key Notes

• Application: Extendible dipper stick assemblies, pins, and pivot bushings
• Hardware: Snap rings and washers for 1.5", 1.75", and 2" pins
• Wear Items: Wear plates, hose clamps, and rubber line supports
• Condition: Mix of new replacement parts and used OEM dipper sticks

Why Choose Broken Tractor

• ✅ New and used OEM dipper components available
• ✅ Fast shipping from two US locations
• ✅ Fitment verified across 580 and 590 series

Frequently Asked Questions

What size snap rings do I need for the dipper pins on a Case 590 Super L?

Broken Tractor carries snap rings for 1-1/2", 1-3/4", and 2" pins used on Case 590 Turbo, 590 Super L, and 590 Super M backhoes. Match the ring to your pin diameter, for example SKU D25279 for 1-1/2" pins, SKU 103-16175 for 1-3/4" pins, and SKU 84158898 for 2" pins. If you are unsure of your pin size, measure the pin or confirm the part number with the parts team.

Does Broken Tractor have inner and outer dipper sticks for the Case 590 Super L Extendahoe?

Yes, we carry used OEM inner and outer Extendahoe dipper sticks for the 590 Super L and 590 Super M, including inner stick SKU 294300A1-U and outer stick SKU 87335180-U. We also offer inner stick SKU 298077A1-U for the 590 Turbo and 590 Super L Series 1, and outer stick SKU 108942A1-U for the 590 Turbo. Fitment can vary by series, so match the part number or confirm with the parts team before ordering.

What is the boom to dipper pin for a Case 590 Super M?

We offer a greasable boom to dipper pin, SKU 175313A1, that fits the 590 Super L and 590 Super M. The matching dipper to boom bushing is SKU D144161 for the same models, and the boom to dipper pin nut is SKU 181042A1. Buying the pin and bushing together helps restore proper pivot fit when replacing worn parts.

Will these Extendahoe dipper parts fit a 590 Turbo?

Many do, but fitment varies by part. The 590 Turbo is covered by items such as bucket pin SKU D140655, wear plate SKU 363321A1, bushing SKU D138047, and cylinder tube end to dipper stick pin SKU 300588A1, while some dipper cylinder pins like SKU 175581A1 are listed only for the 590 Super L and 590 Super M. Always check the listed fitment and match the part number for your machine.

How do I replace worn dipper pin bushings on a Case 590 Super L backhoe?

You can replace the dipper to boom bushing with SKU D144161 for the 590 Super L and 590 Super M, or use bushing SKU D138047, which replaces D138047 and D149725 across the 590 series. For pressing bushings in and out, we also offer a steel bushing driver removal and installation tool (SKU BushingDriver). Inspect the mating pins at the same time so you replace both wear surfaces together.