4300059 3700 PSI Triplex Plunger Pump Kit

The 4300059 AAA Triplex Plunger Pump Kit delivers maximum cleaning power while reducing engine load. This pump features Simpson Cleaning's patented Powerboost technology, providing higher pressure at the spray nozzle for effortless cleaning.

The 4300059 has dual oversized ball bearings for superior wear resistance, reduced friction, and longer-lasting performance in demanding environments.

Features of the 4300059:

• 3700 PSI @ 2.5 GPM Max burst Pressure
• PowerBoost Technology for higher pressure at the spray nozzle
• Adjustable unloader with built-in easy start
• Sight glass and advanced oil seal technology does away with the need for a dipstick
• Thermal relief protection to prevent pump overheating
• Ceramic coated pistons for extended seal life
• Dual oversized radial ball bearings
• Crankcase is manufactured from fully anodized die-cast aluminum for corrosion protection and is sealed to prevent contamination and lube failure
• 3/4 inch gas engine flange and hollow shaft that fits most horizontal shaft engines

Specifications of the 4300059:

Service Note:

The "Burst Pressure" of a pressure washer pump is the highest pressure the pump produces when in a static position and when the trigger is first squeezed, giving the initial burst of pressure and does not reflect the actual operating pressure.

The accurate operating PSI of any pump would be determined by the engine’s horsepower and the size of the nozzle being used at the end of the wand, restricting water flow and causing back pressure.

It is possible for a single pump to be rated at various GPM and maximum PSI levels by adjusting factors such as engine RPMs, nozzle size, or engine horsepower.