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Pump Made Ready Kit; 4GPM|4000PSI|EZ Start Unloader

Part Number:
43.1005
OEM Number:
43.1005
35 In Stock 35 In Stock Sign in to Buy
Pump Model: 49.2271
Bore/Plunger Dia.: 15mm
Stroke: 10mm
Fluid End/Manifold Material: Brass Forged
Version/Type: A5 Version, Engine Direct Drive
Flange Type: A5 (Fits engine 9-13hp)
Shaft Dia.: Hollow Shaft 1"-25.4mm
Max Input POWER: 13HP
Max Input RPM: 3400RPM
Port On Pump: Inlet 3/8", Outlet 1" (On pump side)
Unloader/Pressure Regulator: Not included
Inlet/Port On Unloader: Inlet 3/4" (BSP or NH), Outlet 3/8" Quick Connect
Oil Capacity: 550ml
Oil Type: SAE 15W/40 Non-Detergent
Water Inlet Pressure: 0-50psi
Max Inlet Water Temp.: 122℉

Unloader specifications:

  • Bypass - Two available 3/8" NPT Female ports
  • Inlet - Two available 3/8" NPT Female
  • Outlet - 3/8" NPT Female
  • Mounting port - 3/8" NPT Female bottom mounting port available
  • Easy Start Version
  • Shaft made of stainless steel for greater resistance to rusting and greater resistance to the torsional forces leading to longer life
  • Main spring is guided through a thick spacer instead of a cheap washer
  • Initial spike pressure is 30%, which is approximately a 23% reduced spike pressure compared to competitors.
  • Max - 4,000 PSI
  • Max - 12 GPM
  • Max - 194°F temp rating
  • Fits Pumps with 1/2" inlet and 3/8" outlet