Graco 287579 Pump Repair Kit

The Graco 287579 Pump Repair Kit restores full pressure and performance in your TexSpray 5900 HD or GMAX II 5900 HD sprayer. Perfect for resolving leaks, pulsation, or power loss due to a worn fluid section.

OEM Part #: 287579
Type: Pump Lower / Fluid Section
Fits: TexSpray 5900 HD & GMAX II 5900 HD
Use: Replaces worn pump lower for stable pressure
Installation: Direct-fit OEM component

Retail Price: $1385

You save: $221.6 (16.00%)

Our Price: $1163.4

Based on 0 reviews

Description

Graco 287579 Pump Lower / Pump Repair Kit — Overview & Compatibility

Compatible Machines

This OEM Graco 287579 fluid section (pump lower) / pump repair kit fits the following TexSpray and GMAX II models:

TexSpray 5900 HD Premium (Model 258734)
TexSpray 5900 HD Premium Convertible (Model 248698)
GMAX II 5900 HD (Model 248699)
GMAX II 5900 HD (Model 248698)

What is the Graco 287579 Pump Repair Kit?

The Graco 287579 is the OEM pump lower (fluid section) assembly used on select TexSpray 5900 HD and GMAX II 5900 HD sprayers. Replacing the fluid section restores pressure stability, flow, and spray quality when wear in the lower (packings, valves, cylinder) causes leaks, pulsation, or loss of output.

Why Choose OEM 287579

Direct fit for listed 5900 HD platforms.
Factory-spec components for long service life and consistent pressure.
Performance recovery: helps reduce pulsation and improve finish quality.
Complete lower swap: typically faster than piecemeal seal rebuilds.

Product Details

OEM Part Number	287579
Component Type	Pump Lower / Fluid Section (also referred to as a Pump Repair Kit by some vendors)
Sprayer Families	TexSpray 5900 HD, GMAX II 5900 HD (select variants listed above)
Typical Use	Restores pressure/flow where lower wear causes leaks, pressure loss, or pulsation
Installation	Follow Graco service procedures (pressure relief, proper torque, lubrication, and seating of valves/packings)

Compatibility Notes

Match the part number 287579 to your pump lower callout in the sprayer manual.
Some documentation distinguishes between a complete fluid section and a seal repair kit; confirm what is supplied.
Serial/variant differences can exist within the 5900 HD families—verify before purchase.

Frequently Asked Questions

287579 is commonly supplied as a pump lower (fluid section). Some sellers label it a “pump repair kit” because it replaces the entire worn fluid section. Always review the item contents on the specific listing before purchase.

Check your sprayer’s manual or parts breakdown for the pump lower callout. If it lists 287579 (or the models above), you’re covered. When in doubt, provide your model and serial number to confirm fit.

Persistent pressure drop, pulsation, leaks, difficulty maintaining tip size, or poor finish after routine maintenance usually point to a worn fluid section.

Many lowers can be rebuilt with seal kits, but a complete 287579 lower swap is faster and restores factory tolerances when cylinders/valves are worn, saving repeat downtime.

Always follow Graco procedures: perform pressure relief, use correct torque values, lubricate packings as specified, and prime with compatible material before spraying. If unsure, have a qualified tech install the lower.