Graco 17H879 Piston rod
$788.40
$1,095.00
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Graco 17H879 Piston Rod — Overview & Compatibility
Graco 17H879 Piston Rod is an OEM internal pump component designed to transfer drive motion to the pump piston, helping your sprayer build and maintain consistent fluid pressure. It’s engineered for durability and smooth operation within compatible Graco pumps.
Compatible Machines
- Graco UltraMax II 1095 series
- Graco UltraMax II 1595 series
- Graco GMax II 5900 IronMan
Key Features
- OEM fit for reliable sealing and alignment inside the pump
- Precision-ground rod surface to support packing longevity and smooth stroke
- Supports consistent pressure and spray performance when installed in a healthy pump
- Direct replacement for worn or scored piston rods in listed models
Specifications
| Part Number | 17H879 |
|---|---|
| Item Type | Piston Rod (pump internal component) |
| Compatibility | Designed for UltraMax II 1095, UltraMax II 1595, and GMax II 5900 IronMan ranges (verify by model/serial and pump assembly) |
| Installation | Professional/experienced tech recommended; inspect/replace packings and seals if worn |
| What’s Included | 1 × Graco 17H879 Piston Rod |
Fitment & Replacement Tips
- Match the part number 17H879 against your sprayer’s parts breakdown before purchase.
- When replacing a rod due to scoring or wear, inspect the packings, sleeve, and pump cylinder to avoid premature wear.
- After installation, flush and prime per manufacturer guidance, and check for leaks/pressure stability.
Frequently Asked Questions
It connects the drive mechanism to the pump piston, enabling the pump to generate and maintain spraying pressure. A smooth, true rod surface helps packings seal correctly and last longer.
Check your sprayer’s model, serial, and the pump assembly parts list. The 17H879 commonly fits UltraMax II 1095, UltraMax II 1595, and GMax II 5900 IronMan, but always verify against your specific breakdown to avoid misorders.
It’s highly recommended to inspect packings and seals when replacing the rod. If they show wear, replace them to protect the new rod and restore optimal pump performance.
Inconsistent pressure, leaks past the packings, visible scoring on the rod, or premature packing wear can indicate a worn or damaged rod that needs replacement.
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