Graco 17H873 - Detailed Overview, Specs & Compatibility
Compatible Machines
- TexSpray Mark X ProContractor
- TexSpray 7900 HD ProContractor
What is the Graco 17H873 Pump Cylinder?
Graco 17H873 Pump Cylinder is the hardened MaxLife fluid cylinder (the chamber where the piston cycles) for high-duty texture and coating applications. It restores factory performance and pressure control when the original cylinder is worn, and it’s engineered to pair with the Endurance MaxLife components in pump 17H835.
Key Benefits
- OEM fit and finish for reliable performance.
- Wear-resistant MaxLife design for longer service life with abrasive materials.
- Maintains spray consistency and pressure on Mark X ProContractor and 7900 HD ProContractor.
Specifications
| Part Number | 17H873 |
| Used In Pump | 17H835 Endurance MaxLife (for TexSpray Mark X ProContractor / TexSpray 7900 HD ProContractor) |
| Component Type | Fluid section cylinder (pump body), MaxLife wear-resistant design |
| Typical Symptoms Replaced For | Loss of pressure, internal scoring, premature packing wear, pulsation under load |
| UPC | 755652851035 |
| Notes | Install with matching piston/packings per the 17H835 pump manual |
What’s Included
- 1 × 17H873 cylinder (fluid section body)
- Other pump parts sold separately
Often Used With
- Packings/Seals (V-packings per pump spec)
- Piston/valve components for 17H835
- Check ball (e.g., 17R047) — verify your exact pump/version
Frequently Asked Questions
Yes. 17H873 is the OEM cylinder used in pump 17H835, which is specified for the Mark X ProContractor series.
Yes, when used with the correct 17H835 pump assembly and matching seals/packings.
No. Current parts listings do not show 17H873 for the GMAX II 5900 HD. Check your exact model’s breakdown to confirm the correct cylinder.
Best practice is to replace packings/seals, inspect the piston rod and valves, and install a fresh check ball as specified in the 17H835 pump manual.
Match your sprayer model and pump assembly number. For these units, the cylinder pairs with pump 17H835. When in doubt, confirm against your parts list.
