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Graco 164928 Pump Displacement Connecting Rod

Graco 164928 Pump Displacement Connecting Rod—genuine linkage for displacement pump assemblies; restores smooth stroke and consistent output. Confirm your pump module/parts list before ordering.

  • Transfers drive motion to the displacement piston
  • Ideal when you notice knocking, uneven stroke, or visible rod wear
  • Follow service manual for torque and alignment during install

$369.87
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Detailed Overview: 164928 Pump Displacement Connecting Rod

The Graco 164928 Pump Displacement Connecting Rod is the internal linkage that transfers motion from the drive/crank to the displacement piston inside compatible Graco displacement pump assemblies. Replacing a worn rod restores smooth pump stroke and consistent output.

Compatible Machines

Key Details

  • Genuine component for displacement pump internal linkage.
  • Helps maintain accurate volumetric output and smooth stroke.
  • Precision-machined for alignment and durability under load.
  • Recommended whenever the rod shows wear, scoring, or play.

Technical Information

Part Number 164928
Part Name Connecting Rod – Displacement Pump Assembly
Function Transfers motion from drive/crank to displacement piston
Typical Symptoms Requiring Replacement Knocking, uneven stroke, reduced output, visible rod wear
Installation Notes Requires pump disassembly; follow torque/alignment specs in service manual

Best Practices Before You Order

  • Identify your pump module number from the unit’s parts list or nameplate.
  • Cross-check the rod callout in the service manual exploded diagram.
  • Inspect related wear components (piston, bushings, bearings, seals) during service.

Frequently Asked Questions

Fitment is determined by the displacement pump assembly used in your unit. Locate your pump’s assembly number and confirm the connecting-rod reference in the official parts list before ordering.

Knocking or clunking during stroke, inconsistent output, visible scoring, or side-play at the rod end. Continued operation can accelerate wear of the piston and bearings.

Yes, but it’s smart to inspect and replace related wear items (bushings/bearings/seals) to restore alignment and prolong service life. Follow the service manual’s torque and alignment steps.

Standard mechanic’s hand tools typically suffice. Use a calibrated torque wrench and alignment checks as specified in the service procedure to prevent premature wear.

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