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SKU:
NLT1E00263
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Graco 390-595 Airless Sprayer Pump 246428
$91.99
In Stock
$91.99
Sale price
$91.99
Regular price
This new aftermarket airless-sprayer pump assembly replaces Graco 246428 for compatible 390, Ultra 395, 490, 495, and 595 paint sprayers using the matching lower-pump design.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Graco 390 airless sprayers using pump 246428
- Graco Ultra 395 airless sprayers using pump 246428
- Graco 490 and Ultra 490 compatible configurations
- Graco 495 and Ultra 495 compatible configurations
- Graco 595 and Ultra 595 compatible configurations
- Select FinishPro II and Endurance-series applications only when the pump reference and connection layout match
Product Overview
When a sprayer will not build or hold pressure, pulses at the gun, leaks paint from the pump, or has worn packings after heavy use, a replacement lower may be the practical repair. A clogged tip, dirty filters, stuck prime valve, suction leak, or worn spray tip can cause similar trouble.
The pump draws coating through the inlet, seals it with the packing stack, and moves it through inlet and outlet check valves toward the hose. It is the fluid section, not the electric drive, pressure-control board, or prime valve.
Match 246428 or 246-428, pump body, intake threads, outlet position, rod connection, sprayer model, series, and production revision. Confirm what seals, fittings, and installation hardware are shown with the product before ordering.
Key Features & Performance
- Complete replacement fluid-pump section for matching sprayers
- Addresses worn packings, scoring, or damaged check-valve components as an assembly
- Original-style inlet, outlet, and drive connection when the model matches
- Useful alternative to rebuilding a badly worn lower
Replaces Part Numbers
- 246428
- 246-428
Common Uses
- Restoring pressure after a confirmed worn fluid section
- Replacing a pump that leaks coating through failed packings
- Getting a production sprayer back in service after scoring or seizure
Technical Specifications
- Product Type: Airless paint-sprayer lower pump assembly
- Primary Reference: 246428
- Compatible Sprayer Range: Select Graco 390-595 units
- Condition: New aftermarket replacement
Installation & Fitment
- Relieve all system pressure and unplug the sprayer
- Flush coating according to the material and sprayer instructions
- Inspect filters, prime valve, suction tube, tip, and hose first
- Lubricate and install the pump using the service-manual procedure
- Prime at low pressure and check for leaks before spraying
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Will this fix a sprayer that will not prime? A: Only if the lower pump is at fault. A stuck inlet ball, clogged suction path, prime valve, or air leak may be the cause.
Q: Is this a repacking kit? A: No. This listing is for a replacement pump assembly rather than loose packing seals alone.
Q: Does it fit every Graco 395? A: No. Compare the model series, pump connection, and 246428 reference.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Graco 246428 pump replacement, Graco 390 will not build pressure, Ultra 395 lower pump assembly, Graco 490 paint pump, airless sprayer leaking packings
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.