When you're shopping seals, gaskets, and o-rings for a backhoe, the hardest part is matching a seal kit to the exact hydraulic cylinder on your machine. If that machine is a Case Industrial 580K, 580SK, or 580SL loader/backhoe, this dipper cylinder seal kit is built around a specific rod and bore size and a set of cylinder reference numbers that you can use to confirm fitment before spending the USD 35.00.
Quick verdict
This is a dipper-cylinder seal kit, not a full machine overhaul pack. It uses a 2.50-inch rod and a 5.00-inch bore, and it is meant for OEM cylinder numbers 126151A1, 183795A1, 183795A2, 183795A3, 183795A4, G110694, and G110702. If your cylinder carries one of those numbers and matches those dimensions, the kit is a straightforward replacement option for the backhoe dipper on the 580K, 580 Super K, 580 Super L, and 580 Super L Construction King, plus the crawler tractor-loader applications included in the fitment guidance.
Who it suits
This kit makes the most sense if you already know your cylinder's part number or you have measured the rod and bore and they match the kit's listed dimensions. It is also relevant for several Case crawler tractor-loader models such as the 1150E, 1155E, 1150G, or 1150H that use the same cylinder references, including the dozer tilt and angle cylinder references. Because the kit is in new condition, you are not buying used seals with unknown wear.
What stands out
The clearest strength is the fitment guidance. The fitment details spell out which rod and bore sizes to compare and which cylinder reference numbers to cross-reference. That makes the kit's price straightforward to evaluate because you are paying for a specific dipper cylinder kit rather than a random assortment. The application list covers both loader/backhoe and crawler machines, but the title keeps the focus on the dipper cylinder, which is helpful when you are ordering replacement seals for that one cylinder. You will still need to inspect the rod, barrel, and gland for wear during teardown, but the seal kit gives you a defined starting point.
Meaningful trade-offs
The main limitation is scope. This kit is built for the listed rod and bore sizes and the stated cylinder reference numbers; it is not a universal hydraulic seal kit. If your cylinder uses a different rod or bore size, or your part number is not among the references, look for a kit designed for your specific cylinder. Also, the fit list includes some crawler tractor-loader dozer cylinder uses, so do not assume that every 580-series part is covered; confirm your actual cylinder numbers before ordering. Since this is a single-cylinder dipper kit, be prepared to purchase additional kits if you are rebuilding more than one cylinder on the machine.
BACKHOE DIPPER HYDRAULIC CYLINDER SEAL KIT FOR CASE INDUSTRIAL 580K 580SK 580SL
At USD 35.00, this new seal kit targets the backhoe dipper cylinder on Case Industrial 580K, 580SK, and 580SL loader/backhoes, including the 580 Super K and 580 Super L variants. It also lists fitment for several Case crawler tractor-loaders that use the same cylinder family. The specs to confirm before ordering are the 2.50-inch rod, 5.00-inch bore, and the OEM cylinder numbers 126151A1, 183795A1, 183795A2, 183795A3, 183795A4, G110694, and G110702. If those match, the kit is a direct, new-condition option at a straightforward price.
Bottom line
If your dipper cylinder's rod and bore measurements and part number match the kit's specifications, this seal kit is a practical fit. If they do not, keep looking for a kit designed for your cylinder.
