Case 780-Series Backhoe Cylinder Seal Kits

Each number on the image is a "Ref #" that can be matched on the table below.

Case 780-Series Backhoe Cylinder Seal Kits parts list
REF #	Image	Fits Model	Description	Price	Product Details
	See Details	780CK (boom, 750 (backhoe boom and dipper), 850 (stabilizer, 1150 (stabilizer	Case Backhoe Cylinder Seal Kit	G32299	$46.00	View Info
	See Details	780, 1450, 1450B, 1455B, 880, 880R, W26B, W26FL, W36	Cylinder Seal Kit (3 in x 6 in)	G105516	$140.00	View Info
	See Details	780C, 780D	Seal Kit, Backhoe Boom / Backhoe Bucket	G109503	$51.00	View Info
	See Details	850, 1150B, 1150C, 1150D, 1150E, 1155D, 1155E, 1450, 1450B, 1455B, 680CK, 680CK-C, 780CK, W14, W14B, W14C, W14H, W30	Seal Kit, Hydraulic Cylinder	1543276C1	$74.00	View Info
	See Details	570LXT, 570MXT, 570NXT, 570N EP, 580L, 580 Super L, 580M, 580 Super M, 580N, 580N EP, 580 Super N, 590 Super L, 590 Super M, 590 Super N, 780B, 780C, 780D, W20B, W14, W14B, W14H, W18, W14C, W18B, W20, W36	Hydraulic Line Support, 2.25"	D38648	$9.00	View Info
9	See Details	450B, 450C, 455C, 480C, 480D, 480E, 480F, 580D, 580 Super D, 580E, 580 Super E, 680K, 780C, 780D - See Details	Hydraulic Cylinder Seal Kit	1543252C1	$34.00	View Info
	See Details	580L, 580 Super L, 580M, 580 Super M, 580N, 580 Super N, 590 Super L, 590 Super M, 590 Super N, 780B, 780C, 780D, 845B, 865, 865B, 885, 885B, 1150M, W14, W14B, W14C, W14FL, W14H, W18, W18B, W20, W20B, W20C, W36	Hydraulic Line Support, 3.5"	L79937	$12.00	View Info

Hydraulic cylinder seal kits and line support blocks for Case 780-series backhoe loaders, covering boom, bucket, and general cylinder rebuilds across the 780, 780B, 780C, and 780D machines.

Fits Models At A Glance

780 Series: 780, 780B, 780C, 780D
780CK Series: 780CK

Key Notes

Application: Rebuild boom, bucket, and swing cylinders on 780-series backhoes
Kit Contents: Seals, o-rings, wipers, and backup rings for full cylinder service
Support Parts: Rubber hydraulic line support blocks for cylinder plumbing
Condition: New replacement seal kits and support components

Why Choose Broken Tractor

✅ Verified fitment across every 780-series machine
✅ Fast shipping from two US warehouses
✅ Real support from heavy equipment specialists

Frequently Asked Questions

What seal kit fits the boom or bucket cylinder on a Case 780C or 780D backhoe?

Broken Tractor carries the G109503 boom or bucket cylinder seal kit, built specifically for Case 780C and 780D backhoes. The 1543252C1 hydraulic cylinder seal kit is also listed for the 780C and 780D. Seal kits are cylinder specific, so match the part number on your cylinder or your old kit before ordering.

Which cylinder seal kit fits a Case 780CK backhoe?

For the Case 780CK, we carry the 1543276C1 hydraulic cylinder seal kit and the G32299 backhoe cylinder seal kit, which is listed for the 780CK boom cylinder. The right kit depends on which cylinder you are rebuilding, so compare the part number on your cylinder or confirm with the parts team at (800) 909-7060.

What seal kit fits an original Case 780 backhoe?

Broken Tractor offers the G105516 hydraulic cylinder seal kit, which is listed for the original Case 780 backhoe. Because different cylinders on the machine can use different kits, match the part number on your cylinder before you order.

What comes in a Case 780-series backhoe cylinder seal kit?

Our Case 780-series cylinder seal kits include the seals, o-rings, wipers, and backup rings needed for a full cylinder service. They are new replacement kits for rebuilding boom, bucket, and swing cylinders on 780, 780B, 780C, 780D, and 780CK backhoes.

What do the rubber hydraulic line support blocks do on a Case 780B, 780C, or 780D backhoe?

The rubber hydraulic line support blocks hold and support the hydraulic line plumbing that runs to the cylinders. Broken Tractor carries two versions, L79937 and D38648, and both are listed for the Case 780B, 780C, and 780D backhoes. Match the part number on your existing block to make sure you get the correct one.