Graco 17M873 Pump repair kit

The Graco 17M873 Pump Repair Kit helps restore full spray pressure and efficiency by replacing worn pump packings and seals. Ideal for regular maintenance or fixing leaks and priming issues.

OEM repair kit for select Graco sprayers
Includes seals, packings, glands, and seats
Fits Ultra Max II, FinishPro, LineLazer, GMAX & FieldLazer models
Ensures consistent performance up to 3300 PSI

Retail Price: $509

You save: $74.31 (14.60%)

Our Price: $434.69

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Description

Key Compatibility & Uses for the Graco 17M873 Pump Repair Kit

Compatible Machines

Use the Graco 17M873 Pump Repair Kit to restore pump performance on the following sprayers and stripers:

Graco FieldLazer S100 (Series B displacement pump)
Graco FieldLazer S200
Graco LineLazer 3400
Graco 390 (select variants)
Graco Ultra 395
Graco Ultra Max II 490
Graco Ultra Max II 495
Graco Ultra Max II 595
Graco FinishPro 395
Graco FinishPro II 395
Graco FinishPro II 595
Graco GMAX 3400 (Standard Series)

Tip: Always verify your sprayer’s model/series and pump code before ordering to ensure exact fit.

What the 17M873 Kit Does

The Graco 17M873 Pump Repair Kit contains the packings and wear components required to rebuild the displacement pump section. Replacing these items helps resolve low pressure, priming issues, pulsation, and paint leakage caused by worn packings or seats—extending the life of your existing pump assembly.

Kit Highlights

Part Number	17M873 — Kit, Repair, Pump
Typical Contents	Upper/lower packings, glands, O-rings, checks (balls/seats), seals and related hardware for the displacement pump (contents may vary by production run).
When to Use	Loss of pressure, frequent priming loss, leaking from pump throat, rough spray pattern, or scheduled pump maintenance.
Pressure Guidance	Many compatible units operate up to 3300 psi. Always follow the rating and instructions for your specific model.
Install Skill Level	Intermediate: requires basic hand tools and adherence to Graco service procedures (cleanliness and inspection of piston rod/cylinder are critical).

Why Choose the Graco 17M873 Kit

Restore Performance: Recover prime, pressure, and spray consistency.
Reduce Downtime: Faster than replacing the entire pump assembly.
Cost-Effective: Replace wear items instead of the full lower.
OEM Fit: Designed to meet Graco specifications for compatible models.

Installation & Care (Summary)

Relieve pressure; disconnect power and material supply.
Remove the pump lower per your model’s service manual.
Disassemble on a clean surface; inspect piston rod and cylinder for scoring or wear.
Install new packings/seats in the correct orientation; lubricate as specified by Graco.
Reassemble, test for leaks, and verify pressure/prime.

If the rod or cylinder is heavily worn, a complete pump lower may be required.

Frequently Asked Questions

It fits select units such as Ultra Max II 490/495/595. Always confirm your pump code and series against your unit’s parts manual before purchasing.

Typically upper/lower packings, glands, O-rings, checks (balls/seats), and seals necessary to rebuild the displacement pump. Contents may vary; refer to your model’s breakdown.

Use the kit for normal wear of packings/seats. If your piston rod or cylinder is scored, pitted, or excessively worn, replacing the complete lower is the better long-term fix.

Follow the sprayer’s official rating and manual (many compatible units run up to 3300 psi). The kit itself does not change the machine’s maximum working pressure.

Work clean, lubricate packings as specified, torque fasteners per manual, and flush with appropriate solvent after reassembly. Always relieve pressure and lock out power before service.