Graco 17H879 Piston rod

Product: Graco 17H879 Piston Rod – Genuine OEM Part
Material: High-strength stainless steel for durability
Purpose: Ensures consistent pressure and reliable spray performance
Fits: UltraMax II 1095, UltraMax II 1595, and GMax II 5900 IronMan
Price: $756 (You save 28%)

Retail Price: $1050

You save: $294 (28.00%)

Our Price: $756

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Description

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

Notes: Compatibility references common parts listings. Always confirm by checking your unit’s parts manual and pump assembly number before ordering.

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.

If your current pump assembly number differs, consult the official parts manual to confirm interchange.

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.