Graco 16X457 Fluid Pump Cylinder

Graco 16X457 Fluid Pump Cylinder

Compatible Machines

• TexSpray 5900HD ProContractor
• TexSpray Mark V ProContractor
• 5900HD PCII series

Product Overview

Graco 16X457 Fluid Pump Cylinder is the OEM fluid section housing used on select Graco texture and paint sprayers. It forms the core of the pump assembly that contains the piston, packings, and seals restoring smooth priming, consistent pressure, and reliable spray performance when the original cylinder is worn.

Key Features

• OEM fit for listed TexSpray and Mark V platforms.
• Restores pump efficiency and spray consistency.
• Designed for professional duty cycles and heavy coatings.
• Drop-in replacement with standard Graco service procedures.

Technical Details

What This Cylinder Does

The cylinder is the pressure-bearing chamber where the sprayer’s piston moves fluid. Wear or scoring inside the bore can lead to pressure drop, poor atomization, or difficult priming. Replacing with 16X457 restores a proper sealing surface for the packings, improving output and finish quality.

When Should You Replace It?

• Visible scoring or corrosion inside the cylinder bore
• Chronic pressure fluctuations despite new packings
• Persistent priming issues or increased pulsation

Notes & Cross-Reference

• Matched to the pump assemblies on the compatible machines listed above.
• If your unit uses ProConnect 2 pumps, verify the pump assembly number (e.g., 16X421) before ordering.
• Always confirm model and serial plate to ensure correct fit.

Frequently Asked Questions