Case 580L, 580M, 580SL, 580SM Boom Parts

Backhoe boom assemblies, boom pins, bushings, snap rings, washers, and rubber bumpers for Case 580L, 580M, 580 Super L, and 580 Super M backhoe loaders, covering new steel booms, used OEM booms, and the full range of connecting hardware from swing tower to dipper stick.

Fits Models At A Glance

• 580L Series: 580L, 580 Super L
• 580M Series: 580M, 580 Super M (Series I, II, III)

Key Notes

• Boom Assemblies: New high-strength steel and used OEM booms available
• Pins: Boom-to-swing tower, boom-to-dipper, and cylinder pins
• Bushings: Swing tower, dipper stick, and boom-to-cylinder bushings
• Hardware: Snap rings, pin washers, spacer bushings, and retainer brackets
• Cushioning: Rubber boom and swing tower bumpers

Why Choose Broken Tractor

• ✅ New and used boom options for every budget
• ✅ Complete pin and bushing kits available
• ✅ Fast shipping from two US locations

Frequently Asked Questions

Do you offer both new and used booms for the Case 580L and 580M?

Yes. Broken Tractor carries new steel booms and used OEM booms for these backhoes, including the Used Backhoe Boom for Case 580L, 580M (SKU 129883A1-U) and the New Steel Backhoe Boom for Case 580L, 580M (SKU 129883A1). For the Super L and Super M we offer the New High-Strength Steel Backhoe Boom (SKU 122284A2) along with used OEM options.

Which boom fits a Case 580 Super M Series II or III?

The Used Backhoe Boom for Case 580 Super M Series II and III (SKU 122284A2-U) is listed to fit those later Super M series machines. The used OEM boom SKU 122284A1-U is listed for the 580 Super L and 580 Super M Series I, so Series matters here. If you are unsure which series you have, match your part number or confirm with the parts team before ordering.

What pins connect the boom to the swing tower on a Case 580L?

For the boom-to-swing tower connection on the 580L, 580 Super L, 580M, and 580 Super M, Broken Tractor carries the Boom to Swing Tower Pin (SKU 121779A1) and SKU 250663A1. We also offer the matching Pin Retainer Bracket (SKU 303646A1) and the Boom to Swing Tower Pin Spacer Bushing (SKU 122897A1) to complete the joint.

What size snap ring do I need for Case 580 backhoe boom pins?

It depends on your pin diameter. We carry a 1-1/2 inch pin snap ring (SKU D25279), a snap ring for 1-3/4 inch pins (SKU 103-16175), and a snap ring for 2 inch pins (SKU 84158898). Measure your pin diameter, then match it to the correct ring, or check the part number to be sure.

Do you sell the boom bushings for the 580L and 580M swing tower and dipper stick?

Yes. Broken Tractor carries the Boom Bushing at Swing Tower (SKU D151071) and the Boom Bushing at Dipper Stick (SKU D137218), both listed for the 580L, 580 Super L, 580M, and 580 Super M. We also offer a Right-Hand Bushing for Boom at Dipper Stick (SKU D135739) and a Bushing Driver Removal and Installation Tool (SKU BushingDriver) to help with the swap.