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Graco 866438 Wave Cad Washer

Graco 866438 Washer / Wave CAD is a genuine OEM washer designed to provide proper spacing and sealing inside Graco pump assemblies for reliable operation.

  • OEM Part Number: 866438
  • Ensures correct spacing of internal components
  • Provides leak prevention and proper sealing
  • For Graco piston pump and valve assemblies

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Graco 866438 Washer / Wave CAD – Pump Washer Component

The Graco 866438 Washer / Washer Wave CAD is a genuine OEM washer designed for proper sealing and spacing within Graco fluid pump assemblies, ensuring smooth operation and leak prevention.

Compatible Machines

This washer is used in Graco pumps where part 866438 is specified in the internal valve or fluid section:

  • Graco piston pump assemblies requiring Wave CAD washers
  • Graco airless sprayers with internal valve sealing systems
  • Professional and contractor-grade Graco pump units using OEM internal washers

*Always check your pump or sprayer parts manual to confirm compatibility with part 866438.

Product Specifications

Attribute Details
Part Number 866438
Component Type Washer / Wave CAD
Function Provides proper spacing and sealing in pump assemblies
Application Internal fluid pump assemblies
Quality Genuine Graco OEM replacement part

Frequently Asked Questions

The washer ensures correct spacing and alignment of internal pump components while providing a reliable seal to prevent fluid leakage.

Check your sprayer or pump parts diagram. If part number 866438 is listed for the internal valve or assembly, this washer is compatible.

Yes, the Graco 866438 Washer / Wave CAD is a genuine OEM component designed specifically for Graco pump assemblies.

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