Graco 246426 Pump Assembly

Graco 246426 Pump Repair Kit (.019) is a genuine OEM kit designed to restore pump performance on select Graco airless sprayers.

Compatible with 295ST, 395ST Pro, 455ST Pro, 495ST Pro, STX/SPX & FieldLazer S100
Replaces worn seals, packings, and valves in the pump lower
Ensures proper pressure, priming, and longer pump life

Retail Price: $560

You save: $81.76 (14.60%)

Our Price: $478.24

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Description

Overview & Key Details

Graco 246426 Pump Repair Kit (.019) is a genuine OEM service kit designed to rebuild the pump section of specific Graco airless sprayers. It restores prime, pressure, and overall performance when the fluid section components are worn or leaking. This kit contains essential seals and packings to bring your sprayer back to peak condition.

Compatible Machines

Graco 295ST
Graco 395ST Pro
Graco 455ST Pro
Graco 495ST Pro
Graco STX / SPX Series
Graco FieldLazer S100 (Model 248942)

What’s Included / Purpose

This pump repair kit includes OEM wear components—such as packings, seals, and valve parts—to service the fluid section of your Graco sprayer. Regular replacement maintains pressure consistency, prevents leaks, and extends pump life.

Specifications

Part Number	246426
Type	Pump Repair Kit (.019) (OEM)
Usage	For rebuilding compatible Graco airless sprayer pump lowers
Related Assemblies	Complete pump replacement: 246426 Pump Assembly (Endurance Pump Lower)

When to Use

When the sprayer loses pressure or fails to hold prime.
After long hours of use or visible wear in the pump lower.
As part of routine preventive maintenance to reduce downtime.

Installation Notes

De-pressurize and flush the sprayer before service.
Disassemble the pump lower and replace all worn components included in this kit.
Lubricate the packings per Graco manual instructions before reassembly.
Prime the sprayer and check for leaks and stable pressure.

Follow your sprayer’s service manual for correct sequence and torque specifications.

Frequently Asked Questions

“.019” indicates the internal pump configuration and component sizing for specific Graco pump lowers. Match this number with your parts diagram to ensure compatibility.

Check your machine’s parts manual or serial tag. If your sprayer uses the 246426 pump lower assembly, then this is the correct repair kit.

The repair kit replaces internal wear parts only, while the complete pump assembly replaces the entire fluid section (rod, cylinder, valves, etc.).

Yes. The FieldLazer S100 (Model 248942) uses the same 246426 pump lower, so this repair kit fits perfectly.

After reassembly, prime the sprayer, check for pressure stability, and inspect for leaks. Re-tighten fittings if needed and test spray with water before using paint.