Graco 246428 Endurance Pump

Durable Graco 246428 Endurance Chromex Pump designed for long life and smooth performance. Perfect OEM replacement for popular Graco sprayers.

Max Pressure: 3,300 PSI
Material: Chromex rod & stainless steel cylinder
Inlet: 1-1/4" (Male UNF)
Outlet: 1/4" (Female NPT)
Fits: Ultra 390, Ultra Max 395, 490, 495, 595 & GMAX 3400

List Price: $405

You save: $59.13 (14.60%)

Sale Price: $345.87

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Description

Graco 246428 Endurance Chromex Pump – Durable Replacement Pump

Graco 246428 Endurance Pump is a high-performance replacement pump designed for superior durability and long service life. Built with a Chromex rod and hardened stainless steel cylinder, it ensures reliable performance even in tough spraying conditions. Ideal for professional contractors seeking consistent spray quality and minimal downtime.

Key Features:

Chromex Rod for extended wear resistance
V-Max Blue packings for long-lasting sealing performance
Hardened stainless steel cylinder for maximum durability
Maximum Working Pressure: 3,300 PSI
Fluid Inlet: 1-1/4" (Male UNF)
Fluid Outlet: 1/4" (Female NPT)

Compatible Machines:

This Endurance Chromex Pump fits the following Graco airless sprayers:

Graco GMAX 3400 (Standard Series, 2005 and newer)
Graco Ultra 390
Graco Ultra Max 395
Graco Ultra Max II 490
Graco Ultra Max II 495
Graco Ultra Max II 595
Graco LineLazer 3400

Technical Specifications:

Part Number	246428
Material Type	Chromex Rod / Stainless Steel Cylinder
Maximum Working Pressure	3,300 PSI (22.7 MPa)
Fluid Inlet	1-1/4" (Male UNF)
Fluid Outlet	1/4" (Female NPT)
Application	Replacement Pump Assembly

Frequently Asked Questions

246428 Endurance Pump features a Chromex rod and V-Max Blue packing system which provide longer life and higher resistance to abrasive materials compared to standard steel pumps.

Yes, installation is straightforward and requires only basic tools. Always refer to your sprayer’s service manual for guidance and ensure the unit is depressurized before starting replacement.

It is designed primarily for GMAX 3400 (2005 and newer) and compatible Ultra Max II models. For older sprayers, compatibility should be verified by checking thread size, stroke length, and mounting dimensions.