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JD Motor Grader Hydraulic Cylinders & Kits

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JD Motor Grader Hydraulic Cylinders & Kits parts list
Image Fits Model Description Part # Price Product Details
Unitized Piston, 56mm Bore for John Deere Skid Steers & Graders – AH140072 See Details 240, 250, 317, 320, CT322, 620G/GP/P, 622G/GP/P, 670B/C/D/G/GP/P, 672D/G/GP/P, 770B/C/G/GP/P, 772B/G/P, 870D/G/GP, 872G/GP, 50G, 50 P, 60G, 60 P, ZAXIS 50U-5N, ZAXIS 60USB-5N Unitized Piston, 56mm Bore AH140072
$84.00
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John Deere Cylinder Bore Seal Kit for 670D-772D Graders, 318D-323D – AH164325 See Details 670D, 672D, 770D, 772D, 318D, 320D, 323D Cylinder Bore Seal Kit (56mm) AH164325
$19.00
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Pressure Relief Valve for John Deere Equipment Models See Details 250D, 300D, 310J, 310L, 310SJ, 310SL, 315SG, 315SJ, 315SL, 410J, 410L, 710J, C100, C110, C230, C240, 1450CWS, 1450WTS, 1470, 9540i WTS, 9540WTS, 9550, 9550SH, 9560, 9560 STS, 9560i WTS, 9560SH, 9560WTS, 9570STS, 9580i WTS, 9580WTS, 9640 ETC Pressure Relief Valve RE516335
$170.33
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Blade Tilt Cylinder Seal Kit for John Deere 670, 670A, 670B, 672A, 672B Motor Grader -- RE18736-K See Details 670, 670A, 670B, 672A, 672B Tilt Cylinder Seal RE18736-K
$132.00
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Blade Sideshift Cylinder Seal Kit for John Deere 670, 670A, 670B, 672A, 672B Motor Grader -- RE18742-K See Details 670, 670A, 670B, 672A, 672B Sideshift Cylinder Seal Kit RE18742-K
$179.00
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John Deere Motor Grader Blade Lift Cylinder Seal Kit for 670, 670A, 670B, 672A, 672B -- RE18747-K See Details 670, 670A, 670B, 672A, 672B Cylinder Seal Kit RE18747-K
$136.00
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John Deere Motor Grader Steering (Front) Cylinder Seal Kit for 670, 670A, 670B, 672A, 672B -- RE18750-K See Details 670, 670A, 670B, 672A, 672B Cylinder Seal Kit RE18750-K
$94.00
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John Deere Motor Grader Steering (Rear) Cylinder Seal Kit for 570, 570A -- AR105454-K See Details 570, 570A Cylinder Seal Kit AR105454-K
$119.00
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John Deere Motor Grader Blade Lift Cylinder Seal Kit for 570, 570A -- RE18751-K See Details 570, 570A Cylinder Seal Kit RE18751-K
$114.60
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Piston, Unitized, for JOHN DEERE 317G, 318E, 318G, 319E, 320E, 320G SKID STEER, 450H, 450J, 550H, 550J, 650H, 650J DOZER, 570, 570A, 570B MOTOR GRADER (AH137177) See Details 317G, 318E, 318G, 450H, 550H, 650H, 570A Piston, Unitized AH137177
$103.00
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90 mm bore seal kit AHC19979 for John Deere 310SL backhoe cylinder See Details 310E-315SE, 310G-315SG, 310SJ-325J, 310SL-325SL, 320P, 410D-410P, 510D, 331G-335P, 450G-650G, 700P, 750J-750P, 764, 850J-850X, 620G-872P, 744H-744X, 824J-824X, 260E/P, 310P, 762B, 1510C-2112DC, 337E, 437E, 437G, 460D, 640L-948L-III, 753J, 759J 90 mm Hydraulic Cylinder Bore Seal Kit AHC19979
$39.00
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100 mm bore seal kit AHC22109 for John Deere 310SL backhoe cylinder See Details 310G-310SL, 410E-410L, 710L/P, 333G/P, 335P, 450H-650P, 700J-750K, 670B-872D, 1512E-2112E, 1612DE, 2014DE, 360D, 460D, 540G-III-848HTJ, 640L-948L, 7200R-7310R, 8100-8520, 8225R-8400R, 8R/8RX 340-540, 8560-8970, 9100-9620, 9360R-9620RX, 9RT 470-590 100 mm Hydraulic Cylinder Bore Seal Kit AHC22109
$44.00
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Hydraulic cylinder seal kits, unitized pistons, and cylinder repair components for John Deere motor graders, covering blade lift cylinders and bore assemblies across 570 through 872 series machines.

Fits Models At A Glance

  • 570 Series: 570, 570A
  • D Series: 670D, 672D, 770D, 772D
  • B/C/G/GP/P Series: 620G/GP/P, 622G/GP/P, 670B/C/G/GP/P, 672G/GP/P, 770B/C/G/GP/P, 772B/G/P, 870D/G/GP, 872G/GP

Key Notes

  • Application: Blade lift and hydraulic cylinder seal and piston service
  • Components: Seal kits, unitized pistons, and bore repair parts
  • Bore Sizes: Includes 56mm unitized piston options
  • Condition: New aftermarket replacement parts

Why Choose Broken Tractor

  • ✅ Fast shipping from two US locations
  • ✅ Verified fitment across grader generations
  • ✅ Knowledgeable support for cylinder repairs

Frequently Asked Questions

What John Deere motor grader models does the blade lift cylinder seal kit RE18751-K fit?

The RE18751-K blade lift cylinder seal kit fits John Deere 570 and 570A motor graders. It covers the seal service for the blade lift cylinder on those machines. If you are unsure whether it matches your grader, confirm the part number against your cylinder before ordering.

Which cylinder bore seal kit fits a John Deere 670D through 772D grader?

The AH164325 cylinder bore seal kit fits John Deere 670D, 672D, 770D, and 772D graders. It is a new aftermarket seal kit for cylinder bore service on those D Series machines. Match the part number to your cylinder to verify the correct fitment.

What is a 56mm unitized piston used for on a John Deere motor grader?

The 56mm unitized piston, part AH140072, replaces the piston assembly inside a hydraulic cylinder on John Deere graders. It fits a wide range of models including the 620G/GP/P, 622G/GP/P, 670B/C/D/G/GP/P, 672D/G/GP/P, 770B/C/G/GP/P, 772B/G/P, 870D/G/GP, and 872G/GP. Confirm the bore size on your cylinder matches 56mm before ordering.

Should I rebuild my grader cylinder with a seal kit or replace the piston?

It depends on what is worn. If the cylinder bore and piston are still in good shape, a seal kit like RE18751-K or AH164325 restores sealing, while a scored or worn piston calls for a unitized piston such as AH140072. We carry both seal kits and unitized pistons so you can address either the seals or the piston.

How do I find the right hydraulic cylinder parts for my John Deere grader by serial number?

Fitment can vary by model and serial number, so the safest approach is to match the part number stamped on your cylinder or component to the parts we carry. Broken Tractor covers 570 through 872 series graders, and our team can help confirm the correct kit or piston. Call (800) 909-7060 to verify fitment for your machine.

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