Graco 17J552 Express Pump Lower Kit

The Graco 17J552 Express Pump Lower Kit offers quick replacement for worn pump lowers on ProConnect Express sprayers. Ideal for reducing downtime and maintaining spray performance.

Fits 2014 & newer 390 PC and Ultra 395 PC
Compatible with Ultra Max II 490, 495, 595 PC Pro
Also fits FinishPro II 395 PC and 595 PC Pro
Pre-assembled Express lower — ready for quick installation

Retail Price: $240.5

You save: $30.06 (12.50%)

Our Price: $210.44

Based on 0 reviews

Description

Overview & Key Benefits

Compatible Machines

This kit is designed for the ProConnect Express platform (typically 2014 & newer). Always check your sprayer’s exact revision year.

Graco 390 PC (2014 & newer)
Graco Ultra 395 PC (2014 & newer)
Graco Ultra Max II 490 PC Pro (2014 & newer)
Graco Ultra Max II 495 PC Pro (2014 & newer)
Graco Ultra Max II 595 PC Pro (2014 & newer)
Graco FinishPro II 395 PC (2014 & newer)
Graco FinishPro II 595 PC Pro (2014 & newer)

What Is the Graco 17J552 Express Pump Lower Kit?

The Graco 17J552 Express Pump Lower Kit is a complete replacement fluid section (lower) engineered for quick change-outs on ProConnect Express-equipped sprayers. It comes pre-assembled so you can swap the lower in minutes and get back to spraying with minimal downtime.

Why Choose This Express Lower

Fast field replacement—reduce downtime vs. full pump rebuilds.
Factory-assembled lower (seals/packings, ball & seat, and piston area pre-set).
Built for ProConnect Express systems used on popular contractor units.
Consistent performance and reliable priming when maintained correctly.

Technical Highlights

Part Number	17J552
Pump Type	Express quick-change pump lower (fluid section)
Platform	ProConnect Express (select PC / PC Pro models)
Typical Contents	Pre-assembled lower with packings/seals, ball & seat, piston/rod interface
Common Use	Restores pump performance when the lower is worn or damaged

What’s Included

Pre-assembled Express pump lower (fluid section)
Factory-set packings/seals and ball/seat components
Installation guidance (swap-in design for Express platform)

Fitment Notes

Compatibility generally applies to 2014-and-newer units listed above.
Verify your sprayer’s model year and pump platform (Express vs. Endurance/ProConnect).
If your machine uses a different pump family (e.g., Endurance Chromex), confirm the correct lower (e.g., 17C487) before ordering.

Care & Maintenance Tips

Flush thoroughly after each use with the appropriate solvent for the coating.
Use filtered, clean material to extend packing and valve life.
Inspect inlet strainers and replace when clogged or damaged.
Address leakage or pressure loss early to prevent accelerated wear.

Frequently Asked Questions

The 17J552 Express Pump Lower Kit is intended for ProConnect Express platforms typically found on 2014-and-newer units. For older machines, confirm your exact pump platform and model year before purchase.

Difficulty priming, pulsation, material bypass, loss of pressure, or visible leakage from the lower typically indicate worn packings/valves. A complete Express lower swap is a fast, reliable fix.

No special tools are typically required. The Express system is designed for quick swap-outs. Follow your sprayer’s service manual for safe depressurizing and installation steps.

No. The 17J552 is the Express lower. Endurance/Chromex lowers are a different family. Match the lower type to your sprayer’s pump platform for correct fit.

Flush after each use, store with pump armor or recommended protectant, keep strainers clean, and avoid running the unit dry. Proper cleaning reduces packing and valve wear.