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Graco 165285 Displacement Rod

Graco 165285 Rod, Displacement — precision drive rod for piston-style pump lowers. Use when restoring pressure and sealing performance; confirm by pump lower model/parts manual.

  • Part #: 165285
  • Role: Transfers drive motion to piston in displacement pump
  • Fitment: Matches specific pump lower assemblies (verify by manual/serial)
  • Use Case: Heavy-duty contractor/industrial sprayers
  • Tip: Replace packings/seals and inspect piston/cylinder during install
  • Note: Typically not for Magnum/ProX homeowner series

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Overview & Key Details

The Graco 165285 Rod, Displacement is the drive rod used inside a piston-style displacement pump. It transfers motion from the sprayer’s drive to the piston to draw in and pressurize coating. Correct length, alignment, and surface finish are critical for pump performance and seal life.

Compatible Machines

Technical Specifications

Attribute Detail
Part Number 165285
Component Type Displacement Rod (pump internal drive rod)
Typical Use Industrial/contractor piston pump lowers used on select high-duty sprayers
Fitment Basis Fits specific pump lower assemblies; confirm by pump lower model/serial and parts manual
Notes Precision wear component—inspect piston/cylinder/packings and replace as a set if worn

How to Verify Fitment

  • Check your pump lower identification (stamped code or label) and match it in the service manual.
  • Use the exploded parts diagram for your exact model and serial range; confirm the rod p/n is 165285.
  • If unsure, share your sprayer model and serial with support to confirm before purchase.

Frequently Asked Questions

Identify your pump lower model/serial on the unit and open the official parts manual or exploded diagram for that exact range. If the displacement rod line item shows 165285, it will fit. If your manual lists a different rod p/n, use that number instead.

Typically no. 165285 is associated with heavy-duty piston pump lowers. Consumer/homeowner series (Magnum/ProX) use different lowers and internal components. Always verify by manual before ordering.

Loss of pressure, pulsation, unusual noise, scored piston/cylinder surfaces, rapid packing wear, or chronic leaks. Inspect the entire pump lower, not just the rod, to avoid repeat failures.

Replace packings/seals and inspect the piston & cylinder. If surfaces are scored, consider a full lower rebuild kit. Re-torque fasteners to spec and prime with compatible fluid before returning to service.

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