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JD 450–550B Blade Cylinder & Seal Kits

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JD 450–550B Blade Cylinder & Seal Kits parts list
Image Fits Model Description Part # Price Product Details
2 John Deere Dozer Blade Hydraulic Lift Cylinder 450, 450B, 450C, 450D, 450E, 550, 550B 6405 -- AT40473 See Details 450, 450B, 450C, 450D, 450E, 550, 550B (6405 Blade) Blade Lift Cylinder AT40473
$1,064.00
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1 Hydraulic Angle Cylinder for John Deere 450 Series Blade - USA Made See Details 450, 450B, 450C, 450D, 450E, 550, 550B (6405 Blade) Blade Angle Cylinder AU13861
$1,100.00
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3 John Deere Dozer Blade Hydraulic Tilt Cylinder -- AU13847 See Details 450, 450B, 450C, 450D, 450E, 550, 550B (6405 Blade) Blade Tilt Cylinder AU13847
$871.00
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JD 450C Hydraulic Hose Cover Shield T106947 See Details 450, 450B, 450C, 450D, 450E, 550, 550B Hydraulic Hose Shield T106947
$96.00
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Blade Cylinder Rod JD 450 Dozer AU13858 See Details 450, 450B, 450C, 450D, 450E, 550, 550B Rod, Angle Cylinder AU13858
$367.00
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John Deere Dozer Cylinder Seal Kit (Fits Angle, Tilt, or Lift Cylinders) -- AR105432 | Broken Tractor See Details 450, 450B, 450C, 450D, 450E, 550, 550B (6405 Blade) Seal Kit(Fits Angle, Tilt and Lift Cylinders) AR105432
$95.00
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John Deere Hydraulic Cylinder Spanner Wrench See Details 115mm to 170mm or 4.5" to 6.7" Diameter Cylinders Spanner Wrench JD-115170
$44.00
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Versatile Hydraulic Cylinder Spanner Wrench for John Deere, Fits 2" to 4.75" Diameters See Details 2.00" - 4.75" Diameter Cylinders Spanner Wrench JD-51120
$34.00
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John Deere Crowd Cylinder Seal Kit for 350, 450, 550 Crawlers, 544, 644 & More – RE18741 See Details 350, 350B, 350C, 350D, 450, 450B, 450C, 450D, 450E, 455E, 550A, 550B, 555, 555A, 555B, 544, 544A, 544B, 644, 644A, 9300, 9305 Crowd Cylinder Seal Kit (Backhoe Attachment) RE18741
$139.00
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John Deere Piston Seal Kit 4-1/2 In for 450-550 Crawlers, 510-710 & More – RE14094 See Details 450, 450B/C/D/E, 550, 550A/B, 655, 655B, 755, 755A/B, 510, 510B, 610, 610B, 710, 710B, 640, 640D, 648D, 740, 740A Piston Seal Kit (4-1/2 in) RE14094
$73.00
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John Deere Loader Bucket Tilt Cylinder Seal Kit for 450, 450B, 500B, 510 – AR105392 See Details 450, 450B, 500B, 510 Bucket Tilt Cylinder Seal Kit (2 in x 3-1/2 in) AR105392
$57.00
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John Deere U10666 bucket tilt cylinder tube end bushing See Details 350C, 450C, 550, 555 Bushing, Loader Bucket Cylinder Tube U10666
$37.00
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Shop blade hydraulic cylinders and seal kits for John Deere 450, 450B, 450C, 450D, 450E, 550, and 550B dozers equipped with 6405 blades. Broken Tractor stocks lift cylinders, angle cylinders, tilt cylinders, seal kits, and supporting hardware to restore blade function and stop hydraulic leaks. Whether you need a complete cylinder replacement or just a seal kit to rebuild, we have the parts to get your JD dozer back to pushing.

Fits Models At A Glance:

  • 450 Series: 450, 450B, 450C, 450D, 450E
  • 550 Series: 550, 550B
  • Blade Application: 6405 Blade

Key Notes:

  • Blade Lift Cylinder (AT40473): Raises and lowers the dozer blade — essential for grading control and material handling. Direct fit for 6405 blade applications
  • Blade Angle Cylinder (AU13861): Hydraulically controls blade angle for precision grading and material distribution
  • Blade Tilt Cylinder (AU13847): Controls blade tilt for side-slope grading and finish work
  • Cylinder Seal Kit (AR105432): Universal seal kit fits angle, tilt, and lift cylinders on 6405 blades — stops leaks and restores hydraulic performance. Available from Hercules or Bulldog (Made in USA)
  • Angle Cylinder Rod (AU13858): Replacement rod for angle cylinder rebuilds
  • Hydraulic Hose Shield (T106947): Protects hydraulic lines from wear and debris damage
  • Bushings: Loader bucket cylinder tube bushing (U10666) fits 350C, 450C, 550, and 555 models
  • Service Tools: Spanner wrenches for 2.00"–4.75" and 4.5"–6.7" (115mm–170mm) diameter cylinders — essential for cylinder disassembly and seal replacement

Why Choose Broken Tractor:

✅ Complete Blade Cylinder Coverage – Lift, angle, and tilt cylinders plus all supporting hardware for 6405 blades

✅ Made in USA Seal Kits – Hercules and Bulldog seal kits built to OEM specifications

✅ Same-Day Shipping – In-stock cylinders and parts ship same day from U.S. warehouses

Frequently Asked Questions

What seal kit fits the blade cylinders on a John Deere 450 dozer?

The AR105432 cylinder seal kit fits the angle, tilt, and lift cylinders on John Deere 450, 450B, 450C, 450D, 450E, 550, and 550B dozers with the 6405 blade. One kit design covers all three blade cylinders, so you do not need a different kit for each cylinder. Broken Tractor offers it from Hercules or Bulldog, both made in the USA.

What blade cylinders fit a John Deere 550B dozer?

For a John Deere 550B with the 6405 blade, Broken Tractor carries the AT40473 blade lift cylinder, the AU13861 blade angle cylinder, and the AU13847 blade tilt cylinder. The same cylinders also fit the 450, 450B, 450C, 450D, 450E, and 550 dozers with the 6405 blade. The lift cylinder raises and lowers the blade, the angle cylinder sets blade angle, and the tilt cylinder handles side-slope grading.

Should I rebuild or replace a leaking John Deere dozer blade cylinder?

If the cylinder is only leaking, a rebuild with the AR105432 seal kit is often enough to stop the leak and bring back hydraulic performance. For angle cylinder rebuilds, we also carry the AU13858 replacement angle cylinder rod. If the cylinder is badly damaged, a complete replacement lift, angle, or tilt cylinder is the simpler fix.

What tools do I need to reseal a John Deere dozer blade cylinder?

You need a spanner wrench sized to the cylinder gland nut to take the cylinder apart and replace the seals. Broken Tractor offers one spanner wrench for 2 inch to 4.75 inch diameter cylinders and another for 4.5 inch to 6.7 inch (115 mm to 170 mm) diameter cylinders. Measure your cylinder diameter to choose the right one.

How do I make sure a blade cylinder fits my John Deere 450C dozer?

The blade cylinders and the AR105432 seal kit are listed for the John Deere 450 through 550B dozers with the 6405 blade, so first confirm your machine has that blade. Fitment can vary by model and serial number, so match the part number on your old cylinder to the listing. If you are unsure, call our parts team at (800) 909-7060 before ordering.

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Product: Category: JD 450–550B Blade Cylinder & Seal Kits Brand: Head Title: JD 450–550B Dozer Blade Cylinders | Broken Tractor