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Case 580B, 580C, 580D, 580SE, 580K-I Transmission

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Case 580B, 580C, 580D, 580SE, 580K-I Transmission parts list
Image Fits Model Description Part # Price Product Details
Case 480C, 580C, 580D, 480D Backhoe Transaxle Rebuild Transmission Kit, Bearing, Seal, Gasket See Details 480C, 480D*, 580C, 580D Transaxle Bearing and Seal Kit A150159R-Kit
$790.00
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17 Case A51874 Transmission Synchronizer See Details 480B, 530, 580, 580B, 580C, 580CK Synchronizer Assembly A151114
$490.00
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Case Backhoe Transmission Main Shaft Synchronizer Kit by Broken Tractor See Details 480C, 480D, 480E, 480F, 580C, 580D, 580 Super D, 580E, 580 Super E, 580K-I Synchronizer, Main Shaft A138655
$485.00
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Synchronizer Assembly for Case 680 Backhoe (L33333) See Details 680CK-C, 680E, 680G Synchronizer Assembly L33333
$198.00
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L33334 Synchronizer Assembly for CASE 680 Backhoe See Details 680CK-C, 680E, 680G Synchronizer Assembly L33334
$356.00
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Case Backhoe Transmission Main Shaft See Details 480D, 480E, 480F, 580D, 580 Super D, 580 Super E, (580K Before Ser# JJG0020000) Main Shaft, Transmission A168330
$364.00
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Case Backhoe Transmission Main Shaft -- A148508, A138301 See Details 480C, 480D, 580C (After Serial Number 1004398), 580D Main Shaft A148508, A138301
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18 Case Backhoe Shuttle Output Gear -- A144361, G16624 See Details 480B, 480C, 530CK, 580CK, 580B, 580C Mechanical Shuttle Output Gear A144361
$225.00
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Case Backhoe 3rd Sliding Gear on Main Shaft -- A179853, A136597 See Details 480C, 480D, 580C, 580D 3rd Sliding Gear on Main Shaft (27 & 35 Teeth) A179853
$350.00
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Case Baskhoe 1st and 2nd Main Shaft Sliding Gear -- A168172 | Broken Tractor See Details 480C, 480D, 580C, 580D, 580 Super E, (580K Phase I) 1st and 2nd Main Shaft Sliding Gear (16 & 25 Teeth, 24 Internal Splines) A168172
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Case 580E transmission 1st gear 47 tooth replacement See Details 480C, 480D, 480E, 480E LL, 580E, 580 Super E, 580K Transmission 1st Gear A153751
$234.00
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Case Backhoe Third Gear (28 Teeth, 10 Splines) -- A51960 See Details 580C, 580D, 580SD, 580E, 580 Super E, 580K, 480C, 480D, 480E, 480E LL, 480F, 480F LL, 584C, 585C, 586C, 584D, 585D, 586D, 584E, 585E, 586E Transmission Third Gear (28 Teeth, 10 Splines) A51960
$130.00
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Case Backhoe Transmission Synchronizer - Countershaft -- A188592 See Details 580K III (After Serial Number JJG0020000), 580 Super K, 590 Turbo Synchronizer (Countershaft) A188592
$525.00
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Case Backhoe Input Shaft -- A37617 See Details 580B Input Shaft A37617
$368.00
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Case Backhoe Third Gear(36 Teeth) -- A190338 See Details 580K (After Serial Number JJG0020000), 580 Super K, 590 Turbo Third Gear (36 Teeth) A190338
$305.00
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Case 680C, 680E, 680G Backhoe Main Drive Gear -- L33356 See Details 680C After Serial Number 910600, 680E, 680G Main Drive Gear L33356
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Case Backhoe Driveshaft U Joint -- 256198A1 | Broken Tractor See Details 480C, 480D, 480E, 480E LL, 480F, 480F LL, 480LL, 580C, 580D, 580G, 580K, 580SD, 580SE, 580SK, 590 Turbo, 450B, 455B, 450C, 550, W4, 1835, 1835B, 1835C, 1845, 1845B, 1845C, 1845S, 90XT, 95XT Driveshaft U Joint 256198A1
$51.00
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Case backhoe transfer box powershift shaft A179006 See Details 480E, 480F, 580E, 580 Super E, 580K, 584D, 585D, 586D, 584E, 585E, 586E, 480E LL, 480F LL Transfer Box Input Shaft A179006
$124.00
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Transmission gears, shafts, synchronizers, and rebuild kits for Case backhoe loaders, covering main shafts, sliding gears, input shafts, and transaxle components across the 580B through 580K Phase I generations.

Fits Models At A Glance

  • 580B Series: 580B, 580CK
  • 580C Series: 580C
  • 580D Series: 580D, 580 Super D
  • 580E Series: 580E, 580 Super E
  • 580K Series: 580K, 580K Phase I, 580 Super K
  • 590 Series: 590 Turbo

Key Notes

  • Application: Mechanical shuttle and standard transmission internals
  • Coverage: Main shafts, countershafts, synchronizers, and sliding gears
  • Serial Breaks: Several parts split by serial number, verify before ordering
  • Rebuilds: Transaxle rebuild and synchronizer kits available

Why Choose Broken Tractor

  • ✅ Wide range of new and used transmission parts
  • ✅ Fast shipping from two US locations
  • ✅ Fitment help from experienced parts staff

Frequently Asked Questions

Does the transmission main shaft fit a Case 580C?

Broken Tractor carries a Transmission Main Shaft (SKU A148508, A138301) that fits the 580C after Serial Number 1004398, along with the 580D. Because this part splits by serial number, verify your machine's serial number before ordering. If you are unsure, match the part number or confirm fitment with our parts team.

What is included in the Case 580C transaxle rebuild kit?

We offer a Transaxle Rebuild Kit for Case backhoes (SKU A150159R-Kit) that fits the 580C and 580D, as well as the 480C and 480D. For the exact contents and to confirm it matches your transmission, match the part number to your machine or contact our parts staff before ordering.

Which synchronizer fits a Case 580B transmission?

Broken Tractor carries a Transmission Synchronizer (SKU A151114) that fits the 580B, 580, 580C, and 580CK. For main shaft synchronizer needs on later models, we also offer a Main Shaft Synchronizer Kit (SKU A138655) fitting the 580C, 580D, 580 Super D, 580E, 580 Super E, and 580K-I.

How do I know which third gear fits my Case 580D transmission?

It depends on the gear position and tooth count. We carry a Third Gear with 28 teeth and 10 splines (SKU A51960) fitting the 580C, 580D, 580SD, 580E, and more, plus a 3rd Sliding Gear on the main shaft (SKU A179853) for the 580C and 580D. Match the tooth count and part number to your transmission, or call our parts team at (800) 909-7060 for help confirming the right gear.

Does the input shaft for a Case 580B fit other 580 models?

The Input Shaft SKU A37617 is listed for the 580B only. For the mechanical shuttle transmission on later machines, we carry a separate Input Shaft (SKU A51939) fitting the 580C and 580D. Match the part number to your model to be sure you order the correct shaft.

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Product: Category: Case 580B, 580C, 580D, 580SE, 580K-I Transmission Brand: Head Title: Case 580B-580K Backhoe Transmission | Broken Tractor