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Graco 120590 Honda 4.0 HP Gas Engine

The Graco 120590 Honda Gas Engine 4.0 HP delivers reliable power and long-lasting performance for airless sprayers and industrial applications.

  • Horsepower: 4.0 HP at 3,600 RPM
  • Cooling: Forced air-cooling shroud
  • Start Type: Recoil start with low-oil shutdown
  • Compatible Machines: Graco Mark V, Graco King, Graco Magnum ProX

Retail Price: $1915
You save: $306.4 (16.00%)
Our Price: $1608.6
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Powerful Honda 4.0 HP Engine for Industrial Sprayers

The Graco 120590 Honda Gas Engine 4.0 HP delivers reliable and efficient power for airless sprayers, providing smooth operation, long-lasting durability, and compact design for professional contractors.

Compatible Machines

  • Graco Mark V
  • Graco King
  • Graco Magnum ProX

Key Features

Horsepower 4.0 HP at 3,600 RPM
Peak Torque 10.5 lb-ft at 2,500 RPM
Construction Cast aluminum-silicon block with plasma-arc coated cylinder bores
Cooling Forced air-cooling shroud
Noise Level Below 95 dBA
Start Type Recoil start with low-oil shutdown protection

Applications

Ideal for heavy-duty fluid management, diaphragm pumps, piston units, and on-demand spray modules. Ensures stable flow rates even under variable back-pressure and high-viscosity coatings.

Frequently Asked Questions

It supports both pneumatic diaphragm pumps and piston pumps for high-demand airless sprayers.

Oil and filter changes every 50 hours, spark plug and air filter checks every 100 hours, valve inspections at 200 hours.

Yes, the engine includes a low-oil shutdown feature to prevent damage.

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