Unitized Piston, 70mm Bore for John Deere Dozers & Backhoes – AH165962

Part # AH165962

Fits Models At A Glance:

• John Deere Dozers — Blade Angle Cylinder:
  • 450H, 450J, 450K, 450 P-Tier
  • 550H, 550J (Cylinder # AHC10698, AHC14487, AHC17022, AHC17023), 550K, 550 P-Tier
  • 650H (Cylinder # AH165689, AH211851), 650J, 650K, 650 P-Tier
• John Deere Backhoe Loaders:
  • 110
  • 310E, 310G, 310SE, 310SG
  • 315SE
  • 410E, 410G
• John Deere Compact Excavators:
  • 75G, 75 P-Tier, 85 P-Tier

Key Notes:

• Part Number: AH165962
• Weight: 1.00 lbs (0.45 kg)
• Bore Diameter: 70 mm
• Piston Dimensions: Installed width 36.25 mm, hole diameter 27.58 mm, counterbore 45 mm diameter × 15 mm deep
• Pressure Rating: Up to 5,000 PSI
• Type: Unitized piston — one-piece piston-and-seal assembly (steel body, non-metallic bearing, rubber loading ring, filled PTFE seal ring)
• Origin: Made in USA
• Manufacturer: PVE Products
• Cylinder Application: Blade angle cylinder on the 450–650 series dozers; fits 70 mm-bore cylinders on the backhoe and excavator models listed
• Fitment Note: This piston is sized to the bore listed above. Before ordering, match your cylinder's bore and existing piston dimensions against the specs — the same machine uses different pistons in different cylinders

Common Use Case or Symptoms: Use when a cylinder is bypassing internally, drifting under load, or leaking past the piston — the unitized piston restores the internal seal without replacing the whole cylinder.

Why Choose Broken Tractor:

• ✅ Made in USA by PVE Products – precision-machined steel piston with the seal pre-installed
• ✅ Correct 70 mm Blade Angle Cylinder Fit – matched to the 450–650 series dozer angle cylinder bore
• ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses