BZWBYFY Airless Spray Pump 246428 for Graco Ultra Max II (390–595) — Stainless Steel, 3300 PSI

BZWBYFY 246428 is an airless spray pump replacement engineered to restore high-pressure, professional spraying performance to compatible Graco Ultra Max, LineLazer and GMax series sprayers.

If your airless sprayer is delivering uneven pressure or failing to handle thicker coatings, a worn pump may be the cause. The BZWBYFY 246428 pump is built from stainless steel components and designed as a direct-fit replacement for a wide range of older Graco models, offering up to 3300 PSI of stable output for latex, oil-based paints, stains and heavy coatings. This description explains compatibility, installation tips, expected performance and who should consider this part.

Which machines will this 246428 pump work with?

The 246428 pump fits many legacy Graco and related airless sprayer models but is not universal. It's intended for series and models produced before certain revisions and does not match some PC/Pro variants or machines made after 2019. Check your sprayer part number and series before ordering.

• Compatible: Ultra Max II 390/395/490/495/595; Ultra 395/495/595; Ultimate NOVA and Super NOVA lines; ST Max and Performance Max ranges; Ultra 695 and Ultimate Mx 695 series; GMax 3400 and FineLazer/LineLazer 3400 Series A; FieldLazer S200 Series A.
• Not compatible: Ultra 395/495/595 PC, Ultra Max II 490/495/595 PC Pro, and many units produced after 2019.
• Confirm your sprayer’s serial or parts number to ensure fitment before purchase.

How does this pump affect spraying performance?

Replacing a worn pump with this unit restores consistent high-pressure delivery, which improves atomization and coating uniformity across surfaces. The pump is rated to produce up to 3300 PSI, allowing it to handle thicker materials and maintain a steady flow under load.

• Delivers stable output up to 3300 PSI for smooth, even coatings.
• Compatible with latex, oil-based paints, stains and heavier coatings.
• Helps eliminate pressure surges and inconsistent spray patterns caused by degraded pump components.

What materials and build quality can I expect?

This replacement unit uses corrosion-resistant stainless steel and precision-fit parts intended for repeated use in demanding jobsite conditions. The materials and construction focus on durability and wear resistance to extend service life compared with lower-grade alternates.

• Stainless steel components for corrosion and wear resistance.
• Engineered for long-term service in construction and finishing environments.
• Includes all necessary parts for installation in compatible machines.

How easy is installation and are there any precautions?

Installation is straightforward for anyone familiar with airless sprayer maintenance, and the pump ships with the parts needed for a direct swap on supported models. Before installing, gently shake the pump to free internal steel balls that may have adhered to alloy plates during shipping; this simple step helps avoid early malfunction.

• All required components included for direct replacement on compatible sprayers.
• Shake the pump several times before installation to prevent internal sticking.
• Follow your sprayer manufacturer’s service procedures for safe removal and installation.

Who is this for: The BZWBYFY 246428 is aimed at contractors, painters and serious DIYers who need a reliable, high-pressure replacement pump for older Graco and LineLazer-style airless sprayers. If you operate pre-2019 Ultra Max, Ultimate or GMax models and want to restore factory-level pressure and flow for latex, oil-based and heavy coatings, this pump offers a durable, cost-effective repair option. Do confirm compatibility with your exact model and series before purchasing to ensure a correct fit and hassle-free installation.