DUSICHIN 246-428M Aftermarket Airless Paint Sprayer Pump, Modified Bigger Fluid Section Assembly, More Flow Rate Modified airless spray pump; Ready to build pressure after the pump is connected on sprayers High quality aftermarket fluid section assembly, fullly assembled, more flow rate Replacement of 390 395 490 495 595 Performance tested on every single pump with hydraulic oil. All the Parts are included inside the pump