Graco 16X421 ProConnect Endurance Pump
The image above displays the Graco 16X421 ProConnect Endurance Pump a genuine OEM replacement part built for professional Graco sprayers. It highlights the pump’s precision-engineered metal body and durable construction, designed for high performance and reliability.
- Quick-Change Design: Features Graco’s ProConnect system for fast, on-site pump replacement.
- Durability: Part of the Endurance Series, offering long service life and consistent pressure output.
- Compatibility: Fits TexSpray Mark V, GMAX II 5900 HD, and TexSpray 5900HD ProContractor models.
- Professional Quality: Engineered for contractors and painters who demand dependable performance on every job.
This screenshot emphasizes the pump’s authenticity, OEM quality, and current pricing as displayed on sprayersandparts.com.
Overview & Key Details of the Graco 16X421 ProConnect Endurance Pump
Compatible Machines
- Graco Mark V (5900) ProContractor Series
- Graco TexSpray 5900 HD (Mark V) ProContractor Series
- Graco Mark V (general Mark V family with ProConnect pump lower)
Tip: If your exact sprayer variant isn’t listed, verify the pump lower part number in your unit’s parts manual for a precise match with 16X421.
What Is It?
Graco 16X421 ProConnect Endurance Pump is a complete fluid-section (pump lower) replacement for select Mark V/TexSpray 5900 HD professional airless sprayers. It features Graco’s ProConnect quick-change system for fast, on-site swap-outs and the durable Endurance design for long service life in demanding, daily use.
Key Features
- ProConnect quick-change: minimize downtime with rapid pump lower replacement.
- Endurance wear package: engineered components for extended life and lower ownership cost.
- Smooth, consistent output ideal for high-production interior/exterior coatings.
- Direct replacement assembly—no guesswork on seals, valves, or stack-up.
Technical Specifications
| Model / Part No. | 16X421 |
|---|---|
| Pump Type | Endurance displacement pump (fluid section / pump lower) |
| Change System | ProConnect quick-change |
| Max Working Pressure | 3300 psi (22.7 MPa) |
| Fluid Inlet | 1-5/16-12 UN (male) |
| Fluid Outlet | 3/8 in NPT (female) |
| Typical Materials | Architectural coatings (primers, acrylics, latex, elastomerics) within machine rating |
What’s Included
- Fully assembled 16X421 pump lower (displacement assembly)
- Factory-configured check components and wear parts inside the assembly
Installation may reuse your existing drive, filter, and hose assemblies (model-dependent). Always follow your unit’s service manual.
Fitment & Installation Notes
- Only for machines designed to use a ProConnect Endurance pump lower.
- Use OEM seals and lubricants; prime and pressure-test after installation.
- If unsure, provide your exact sprayer model and serial to confirm compatibility with 16X421.
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