Product Overview
Graco 17H870 Pump Cylinder is a genuine OEM replacement lower-cylinder for the Endurance Vortex MaxLife pump used on the TexSpray Mark IV ProContractor. Replacing a worn or scored cylinder restores sealing surface integrity, helping maintain prime, steady pressure, and optimal spray performance.
- OEM fit—no modifications when used with 17H832 pump.
- Designed for high-duty texture & paint applications on Mark IV ProContractor units.
- Pair with the correct Graco packing kit and piston/rod for a complete lower rebuild.
Compatible Machines
- Graco TexSpray Mark IV ProContractor (2019 & newer)
Fitment note: This cylinder is the OEM replacement used in pump assembly 17H832 (Endurance Vortex MaxLife) designed for the TexSpray Mark IV ProContractor.
Quick Specs
| Part Number | 17H870 |
| For Use With Pump | 17H832 Endurance Vortex MaxLife Piston Pump |
| Compatible Sprayer Family | TexSpray Mark IV ProContractor (model year 2019+) |
| Max Working Pressure | Up to 3300 psi (per pump spec) |
| What’s Included | Cylinder only (no piston/rod or packing kit) |
| UPC / GTIN | 755652851004 |
In the Box
- 17H870 Cylinder (single component)
Order packing kit and piston/rod separately if needed.
Installation Tips
- Depressurize and flush the sprayer per Graco safety/maintenance procedures.
- Inspect piston and packings; replace worn items while the pump is open.
- Lubricate packings and reassemble to specified torque; prime at low pressure and check for leaks.
Frequently Asked Questions
No. The 17H870 is the cylinder only. If your packings or piston/rod show wear, add the correct Graco packing kit and piston/rod to your order for a full lower rebuild.
The 17H870 is the replacement cylinder used in pump 17H832, which is specified for the TexSpray Mark IV ProContractor (2019 & newer). Always verify against your sprayer’s parts manual before ordering.
Signs include persistent pressure drop, pulsation, difficulty priming, rapid packing wear, or visible scoring inside the cylinder bore.
