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Graco 171398 Retainer Ring

The Graco 171398 Retainer is a precision OEM part that secures the piston in the pump and ensures smooth, reliable operation of your sprayer.

  • Maintains proper piston alignment
  • Durable OEM construction for long service life
  • Direct replacement — reduces maintenance downtime
  • Compatible with select Graco pump models

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Graco 171398 Retainer – Product Overview

Compatible Machines

  • Graco Model 217022
  • Graco Model 217338
  • Graco Model 262818 (Series B)
  • Graco Model 24W139 (Series B)
  • Graco Model 262818 (Series C)
  • Graco Model 24W139 (Series C)

The Graco 171398 Retainer is a precision OEM-grade part used in piston-type pump assemblies. It helps maintain correct piston alignment and secure functioning within the fluid section of compatible sprayers.

Key Attributes

  • OEM part – ensures perfect fit and reliable performance
  • Essential for pump integrity and smooth piston operation
  • Durable construction for long-term use under pressure
  • Direct replacement — simplifies maintenance and reduces downtime

Usage Recommendations

Use the 171398 Retainer when servicing the piston pump or replacing worn components. Always cross-check with your sprayer’s parts diagram to ensure model compatibility before ordering.

Frequently Asked Questions

The 171398 Retainer secures the piston and related components inside the pump housing — ensuring proper alignment and preventing leaks or mis-firing of the pump.

Check your sprayer’s parts diagram or the model number against the “Compatible Machines” list above. If your unit matches one of those models, 171398 is the correct retainer.

Replace the retainer if it shows wear, damage, or during a full pump rebuild. Regular maintenance helps ensure reliable pump performance and longer sprayer life.

Technical Specifications

Attribute Description
Part Number 171398
Part Type Retainer (Piston / Pump component)
Compatible Models 217022, 217338, 262818 (Series B & C), 24W139 (Series B & C)
Material / Build OEM-spec metal/plastic (as per Graco assembly)
Function Secures piston and internal pump elements; ensures alignment and leak prevention

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