Graco 16X426 Displacement Pump MaxLife

Part: Graco 16X426 Displacement Pump (MaxLife)
Fits: GMAX II 7900 ProContractor (16W885) & IronMan (16W887)
Highlights: ProConnect II quick-swap lower, MaxLife wear sleeve, 3300 psi max

Retail Price: $1995

You save: $319.2 (16.00%)

Our Price: $1675.8

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Description

Overview & Compatibility for the Graco 16X426 Displacement Pump (MaxLife)

Compatible Machines

This ProConnect II pump lower fits the following Graco GMAX II 7900 series sprayers:

GMAX II 7900 ProContractor — model 16W885
GMAX II 7900 IronMan — model 16W887
GMAX II 7900 Standard Lo-Boy — model 16W884

Tip: Always confirm against your sprayer’s parts list or owner’s manual.

What is it?

Graco 16X426 Displacement Pump (MaxLife) is a complete fluid section / pump lower designed for the GMAX II 7900 family. The MaxLife treatment delivers enhanced wear resistance for longer life in demanding use, while the ProConnect II design enables fast, on-the-job pump swaps to reduce downtime.

Direct OEM replacement for specified 7900 models
MaxLife wear surfaces for durability
ProConnect II quick-change lower for rapid service
Built to handle heavy-duty coatings and high-volume jobs (within sprayer ratings)

Quick Specs

OEM Part Number	16X426
Series / Technology	MaxLife wear package; ProConnect II compatible lower
Application	Complete displacement pump (fluid section / lower) for GMAX II 7900 variants listed above
Included	Factory-assembled pump lower with intake/piston components (transfer hardware reused per manual)
Notable Service Note	Some repair notes and components are specific to the 16X426 family (see Graco service manual for details).

Fit & Replacement Guidance

If your sprayer is a GMAX II 7900 ProContractor, IronMan, or Standard Lo-Boy with the model numbers above, this is the correct pump lower. For other Mark-series or APX units, use the pump lower part number called out in your model’s parts list.

Match by model name and model number (e.g., 16W885, 16W887, 16W884).
Use the sprayer’s serial label and manual to verify before ordering.

Frequently Asked Questions

It fits the GMAX II 7900 ProContractor (16W885), IronMan (16W887), and Standard Lo-Boy (16W884). Always verify against your sprayer’s exact model/parts list before purchase.

Both are GMAX II 7900 pump lowers with MaxLife wear surfaces. The 16X426 is the ProConnect II configuration for the 7900 ProContractor/IronMan family, while 16X423 is used on certain 7900 Standard configurations. Always match by your sprayer’s model number.

Yes—it's a complete displacement pump (fluid section / lower). Follow the Graco service manual for removal/installation and torque specs.

If you’re familiar with Graco ProConnect II pump swaps and follow safety procedures, installation is straightforward. If unsure, have a qualified technician perform the swap and test for leaks/prime performance.