Cylinder Upgrade Kit – 2.5″

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Upgrade kit for 2.5” Standard Cylinder that replaces the out-of-date components with a new piston assembly, bottom end cap assembly end cap O-rings, and #6 phillips head screws. The piston assembly includes new cup seals, piston body lift rod and a check valve. The bottom end cap assembly includes the end cap, O-ring and foot valve.


Design and Construction

  • Stainless steel lift rod and hardware
  • Delrin bottom end cap
  • Delrin Piston
  • Buna rubber cup seals
  • Plastic and stainless-steel check valves


  • 1 – 2.5” Piston Assembly
  • 1 – 2.5” Bottom End Cap Assembly
  • 2 – 2.5” End Cap O-rings
  • 12 – #6 Phillips Head Screws



Related parts:

Maintenance Kits

Related maintenance kits:


This accessory works with these pumps: