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Graco 166371 Ball Stop Pin

The Graco 166371 Ball Stop Pin is a key internal component used in pump valve assemblies to control valve ball movement and maintain proper pump performance.

  • OEM Graco replacement part
  • Ensures correct valve ball positioning
  • Helps maintain consistent pressure and operation

$40.43
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Compatible Machines – Graco 166371 Ball Stop Pin

About the Graco 166371 Ball Stop Pin

The 166371 Ball Stop Pin is a precision hardware component used to secure and limit movement of the valve ball inside the pump’s intake or outlet valve housing. Its correct placement is essential for maintaining proper pump sealing and performance.

Key Features

  • Designed for Graco pump valve assemblies
  • Helps control valve ball movement for consistent performance
  • Durable construction for long service life
  • OEM replacement part for accurate fit and reliability

When to Replace

  • If the pump valve assembly is being rebuilt
  • When the ball stop pin shows wear or deformation
  • If your sprayer loses prime or shows inconsistent pressure

Frequently Asked Questions

It keeps the valve ball in its correct position within the pump assembly, ensuring consistent flow and proper sealing.

Refer to the parts manual for your specific Graco sprayer or pump. The Ball Stop Pin will be listed under the pump lower or valve assembly section if compatible.

Yes, this is an OEM Graco component designed for accurate fit, durability, and proper performance.

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