Graco 288821 Pump Piston Rod

The Graco 288821 Pump Piston Rod is a genuine OEM replacement part designed for heavy-duty TexSpray and DutyMax sprayers. It ensures reliable pressure and smooth performance in demanding applications.

Fits GH 230, GH 300, and DH 230DI sprayers
Used in pump models 288819, 24M629, and 24X001
Durable Chromex surface for long-lasting wear resistance
OEM precision ensures perfect fit and consistent spray output

Retail Price: $373

You save: $97.73 (26.20%)

Our Price: $275.27

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Description

Overview & Compatibility for the Graco 288821 Pump Piston Rod

Compatible Machines

This OEM rod fits select TexSpray DutyMax and GH/DH series sprayers that use the pumps listed below.

TexSpray DutyMax GH 230 DI ProContractor
TexSpray DutyMax DH 230DI ProContractor
Graco GH 230 (units that use pump 288819/24M629/24X001)
Graco GH 300 (units that use pump 288819/24M629/24X001)
Graco DH 230DI (units that use pump 288819/24M629/24X001)

Tip: Match your sprayer’s pump model to the table below or verify in your unit’s parts manual.

What is it?

Graco 288821 Pump Piston Rod (often referenced as a Chromex piston rod) is the OEM internal rod in the displacement pump. It drives the piston to create suction and discharge, restoring consistent pressure and spray pattern when replacing a worn rod.

Fits These Pump Models

Pump Model	Common Use / Notes
288819	Displacement pump used on select GH/DH/DutyMax units
24M629	Replacement/variant pump assembly in GH/TexSpray lines
24X001	Fluid pump where 288821 is the specified piston rod

If your sprayer uses one of the pump models above, the Graco 288821 is the correct piston rod.

Why choose this OEM rod

OEM quality for proper fit, durability, and pressure performance
Helps restore priming, pressure stability, and smooth stroke
Compatible with multiple DutyMax/GH/DH pump assemblies (see table)

What’s in the box

1 × Graco 288821 Pump Piston Rod

Packings/valves/seals are not included unless specified by a repair kit.

Service notes

Depressurize and follow the safety/repair steps in your sprayer’s manual.
Inspect piston/rod, sleeve, check balls, and packings; replace worn parts together for best results.
After installation, flush and pressure-test for leaks and stroke smoothness.

Frequently Asked Questions

It fits GH 230 units that use pump models 288819, 24M629, or 24X001. Check your data plate or parts manual to confirm the pump on your exact sprayer variant.

This page is for the piston rod only. Repair kits may include additional items like packings, seals, and check components. If your rod is scored and your packings are worn, consider replacing both for best performance.

“Chromex” refers to Graco’s hardened surface treatment used on certain wear parts for improved durability. Always match by the part number 288821 for compatibility.

Common listings include TexSpray DutyMax GH 230 DI ProContractor and TexSpray DutyMax DH 230DI ProContractor. Verify your pump model to be sure.

Follow the torque/assembly guidance in your Graco service manual. Some piston components ship with pre-applied thread patches—do not remove these. Replace damaged packings and o-rings during reassembly.