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Case Hydraulic Pump Couplers

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Case Hydraulic Pump Couplers parts list
Image Fits Model Description Part # Price Product Details
Hydraulic pump coupler kit for Case 580CK backhoe with shaft and couplers, part D64311 See Details 480CK, 530CK, 580CK, 580B, 680CK, 584, 585, 586 Hydraulic Pump Coupler Kit D64311-K
$129.00
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Case-Hydraulic-Pump-Coupler-Shaft-Side-View See Details 480CK, 530CK, 580CK, 580B, 680CK, 584, 585, 586 Shaft, Hydraulic Pump Coupler D64311
$69.00
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Case Backhoe Splined Hydraulic Pump Drive Coupler by Broken Tractor See Details 480CK, 530CK, 580CK, 580B, 680CK, 584, 585, 586 Coupler, Hydraulic Pump D31108
$39.00
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Case 580C Pump Coupler in front of engine See Details 380CK, 430CK, 480CK, 480B, 480C, 480D, 480E, 480F, 480LL, 580CK, 580B, 580C, 580D, 580E, 580 Super E, 580F, 350, 350B, 450, 450B, 450C, 455B, 455C, 550, 550E, 550G, 550H, 584, 585, 586, 584C, 585C, 586C, 584D, 585D, 586D, 584E, 585E, 586E Hydraulic Pump Coupler D90883
$88.00
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Case Backhoe Hydraulic Pump Coupler 253541A1 | Broken Tractor See Details 570LXT, 580K, 580 Super K, 580L, 580 Super L*, 580M*, 590 Turbo, 590 Super*, 585G, 586G, 588G Hydraulic Pump Coupler (15-Splines) D136083
$54.00
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Case-17-Spline-Hydraulic-Coupler See Details 570LXT, 580K, 580 Super K, 580L, 580 Super L*, 580M*, 590 Turbo, 590 Super*, 585G, 586G, 588G Hydraulic Pump Coupler (17-Splines) 257948A1
$54.00
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14 Spline pump coupler 87437920 | Broken Tractor See Details 580 Super L, 590 Super L, 580M Ser. II & III, 580 Super M Ser. I, 590 Super M Ser. I Hydraulic Pump Coupler (14-Splines) 87437920
$124.00
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Case Hydraulic Coupler Adapter J905820 See Details 1840, 1845C, W11B, 450, 455, 455C, 480E, 480F, 550, 570LXT, 580K, 580L, 580M, 580SE, 580SK, 580 Super L, 584, 584E, 585E, 585G, 586E, 586G, 590, 590 Super L Flange, Hydraulic Pump Drive Coupler J905820
$38.00
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Case-Hydraulic-Coupler-Adapter-Front-View See Details 580 Super L, 590 Super L, 580M Ser. II & III, 580 Super M Ser. I, 590 Super M Ser. I Hydraulic Pump Coupler (14-Spline) 87429360
$74.00
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Hydraulic pump coupler rubber bushing for Case backhoes See Details 480D, 580D, 580K, 580 Super K, 580L, 580 Super L, 580M, 580 Super M, 590 Turbo, 590 Super L, 590 Super M, 480LL, 570LXT, 570MXT, 585E, 585G, 586E, 586G Flex Bushing, Hydraulic Pump Coupler N14330
$7.00
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Case Backhoe Hydraulic Pump Mounting Support Bracket See Details 580K, 580SK, 580L, 580SL, 590 Turbo, 590SL, 580M-I, 580SM-I, 590SM-I, 570LXT, 570MXT, 585G, 586G Bracket (Hydraulic Pump Mounting) 87702116
$244.00
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Hydraulic Pump & Coupler Kit for Case 480B, 480C, 580B, 580C Backhoes – 13-Spline See Details 480CK, 480B, 480C, 530CK, 580CK, 580B, 580C, 580F, 310G, 350, 350B, 450, 450B, 450C, 455B, 455C, 550,  584, 585, 586, 584C, 585C, 586C 584D, 585D, 586D Hydraulic Pump & Coupler BT-CASE-HYDPUMP-KIT
$524.00
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Hydraulic pump couplers, flex couplers, drive coupler shafts, adapter plates, mounting brackets, and rubber bushings for Case backhoe loaders, covering 13-spline, 14-spline, and 15-spline designs across CK series through the L and M series machines.

Fits Models At A Glance

  • CK Series: 380CK, 430CK, 480CK, 530CK, 580CK, 680CK
  • 480/580 Series: 480B, 480C, 480D, 480E, 480F, 480LL, 580B, 580C, 580D, 580E, 580 Super E, 580F
  • K Series: 580K, 580 Super K
  • L Series: 580L, 580 Super L, 590 Super L
  • M Series: 580M, 580 Super M, 590 Super M, 590 Turbo

Key Notes

  • Spline Counts: Available in 13-spline, 14-spline, and 15-spline configurations
  • Component Types: Flex couplers, coupler shafts, adapter plates, mounting brackets, and rubber bushings
  • Function: Connects the engine or drive shaft to the hydraulic pump input
  • Fitment: Spline count and design vary by model and serial number

Why Choose Broken Tractor

  • ✅ New and used couplers for many Case series
  • ✅ Fast shipping from two US locations
  • ✅ Parts team helps confirm correct spline count

Frequently Asked Questions

What is a hydraulic pump coupler?

A hydraulic pump coupler is the component that connects the engine or drive shaft to the hydraulic pump input shaft. It transfers rotational power to drive the pump and often uses a splined design or a rubber bushing to absorb shock. Broken Tractor carries flex couplers, coupler shafts, and rubber bushings for Case backhoes.

Which hydraulic pump coupler fits a Case 580K?

The 580K and 580 Super K use a 15-spline flex coupler as well as coupler adapters and rubber bushings depending on the pump setup. Because designs vary by serial number, match your existing part number or confirm with our parts team at (800) 909-7060.

Which coupler fits a Case 580B?

The 580B and other early CK series backhoes use a 13-spline coupler along with drive coupler shafts. We also offer complete pump and coupler kits covering the 480B, 480C, 580B, and 580C models.

What are common hydraulic coupler problems?

Worn or cracked couplers often cause noise, vibration, or loss of pump drive. Rubber bushings dry out and split over time, which lets the coupler slip. Broken Tractor carries replacement bushings and full couplers to correct these issues.

What hydraulic coupler spline sizes are available for Case backhoes?

Case backhoe pump couplers come in 13-spline, 14-spline, and 15-spline configurations depending on the model and pump. Counting the splines on your existing coupler is the best way to confirm the right fit.

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Product: Category: Case Hydraulic Pump Couplers Brand: Head Title: Case Backhoe Hydraulic Pump Couplers | Broken Tractor