Case 580 Super L, 580 Super M Seal Kits

Hydraulic cylinder seal kits and tools for Case 580 Super L and 580 Super M backhoe loaders, covering complete seal rebuild packages, boom, dipper, bucket, stabilizer, swing, loader lift, steering, and extendahoe cylinder circuits.

Fits Models At A Glance

• 480F / 570 Series: 480F, 570LXT, 570MXT, 570MXT Series III, 570NXT, 570N EP
• 580K / 580 Super K Series: 580K, 580K-III, 580SK, 580 Super K
• 580L / 580SL / 580 Super L Series: 580L, 580L Series II, 580SL, 580 Super L
• 580M / 580SM / 580 Super M Series: 580M, 580SM, 580SM Series II, 580SM Series III, 580 Super M, 580 Super M Series I, 580 Super M Series II, 580 Super M Series III
• 580N / 580 Super N Series: 580N, 580N EP, 580SN, 580 Super N, 580 Super N WT
• 590 Series: 590 Turbo, 590L, 590SL, 590SL Series I, 590SM, 590SN, 590T, 590 Super L, 590 Super M, 590 Super N

Key Notes

• Application: Hydraulic cylinder seal kits and tools for Case 580 Super L and 580 Super M backhoe loader cylinders
• Coverage: Includes complete hydraulic cylinder seal rebuild packages, boom cylinder seal kits, dipper cylinder seal kits, bucket cylinder seal kits, stabilizer cylinder seal kits, swing cylinder seal kits, loader lift and bucket tilt cylinder seal kits, extendahoe and clamshell loader bucket cylinder seal kits, 4WD and 2WD steering cylinder seal kits, multi-application cylinder seal kits, loader bucket cylinder hoses, hydraulic line supports, and cylinder tools
• Function: Restores hydraulic cylinder sealing and performance across all major cylinder positions on Case 580 Super L and 580 Super M backhoe loader platforms
• Fitment Note: Series I, II, and III configurations have different rebuild package part numbers — verify series when ordering

Why Choose Broken Tractor

• ✅ Complete seal rebuild packages available for 580 Super L and 580 Super M
• ✅ Individual seal kits available for every major cylinder position
• ✅ 4WD and 2WD steering cylinder seal kit options available

Frequently Asked Questions

Which cylinder seal kit package fits a Case 580 Super M?

It depends on the series of your machine. The CS-SK-4 package fits the 580 Super L and the early 580 Super M Series I, the CS-SK-4A package fits the 580 Super M Series II and III, and the CS-SK-4A+ package fits the 580 Super M+ Series II and III after serial number N4C304000. Check your serial number plate before ordering, or call (800) 909-7060 and the parts team can confirm the right package.

What boom cylinder seal kit fits a Case 580 Super M Series 2?

Broken Tractor offers boom cylinder seal kit 87418297, which fits the 580SM Series 2 and Series 3. Kit 1542919C4 fits the 580K, 580 Super K and 580 Super L, and is listed with a fitment note for the 580 Super M. If you are unsure which boom kit your backhoe takes, match the part number on your existing cylinder or confirm with the parts team.

What steering cylinder seal kit fits a Case 580 Super L?

We carry two steering cylinder seal kits for the 580 Super L. The G110045 power steering cylinder seal kit fits the 580L, 580 Super L, 580M and 580 Super M, and the D149739 4WD steering cylinder seal kit fits the 580L, 580SL, 580M and 580SM. The D149739 also fits the 580K after serial number JJG0020000 with the 4-bolt steering cylinder, so check your serial number and steering setup before ordering.

Does the Case 580 Super L bucket cylinder seal kit fit a 590 Super L?

Yes, for earlier machines. Bucket cylinder seal kit 1542923C2 fits the 580K, 580 Super K, 580 Super L, 580 Super M and 590 Turbo, plus the 590 Super L before serial number JJG0210575. Verify your serial number to make sure your 590 Super L falls in that range.

What tools do I need to reseal a hydraulic cylinder on a Case 580 Super L or 580 Super M?

Broken Tractor offers a Case hydraulic spanner wrench (CAS-1456A) for removing and installing cylinder glands, and a hydraulic gland seal installation tool kit (CAS-1457) for fitting new seals. Both are built for Case backhoe cylinder work and pair with the individual seal kits and complete rebuild packages we carry for the boom, dipper, bucket, stabilizer, swing and steering cylinders.