• Manufacturer: Briggs and Stratton
  • SKU: 40586
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  • Briggs & Stratton 40586 20kw Standby Generator LP/NG New
  • Briggs & Stratton 40586 20kw Standby Generator LP/NG New
  • Briggs & Stratton 40586 20kw Standby Generator LP/NG New
  • Briggs & Stratton 40586 20kw Standby Generator LP/NG New
Briggs & Stratton 40586 20kw Standby Generator LP/NG New

$ 4,340.00
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Briggs & Stratton 40586 20kw Standby Generator LP/NG New


Brand new & manufacturer direct
Guaranteed to work like new or your money back
5 year manufacturer's warranty
Works with Liquid Propane and Natural Gas
Authorized Briggs & Stratton dealer

Full Specifications Sheet



Losing power is nothing to worry about any more with the 20 kW1 generator. When the power goes out your backup generator seamlessly provides power to your home within seconds of a power outage.


  • 20kw generator
  • Steel enclosure


  • New AVR optimizes generator performance with tighter voltage control
  • LCD display that displays multi-line text and graphics
  • Default exercise cycle setting of 16 seconds
  • Low speed exercise available to save fuel and reduce noise
  • Monitors cold temperatures to avoid moisture buildup in engine oil
  • Cleaner power with improved frequency regulation
  • Approved for installation as close as 18" to a building
  • Hinged roof and removable side panels for better service access to the engine and alternator
  • Controller, battery charger, and AVR can be replaced separately
  • External on/off switch located on back of enclosure
  • Easy conversion between natural gas (NG) and liquid propane vapor (LPV) during installation
  • Advanced debris management keeping engine clean and cool for enhanced durability and performance
  • Dynamically balanced crankshaft minimized engine noise and vibration
  • Made with automotive grade galvanneal steel or aluminum to resist rust
  • Powder-coated paint for years of protection against chips and abrasions
  • Certified to withstand hurricane-force winds up to 175mph


Brand Vanguard
Engine Speed 3600 RPM
Engine Fuel Liquid Propane Vapor or Natural Gas
Engine Cylinder OHV
Cylinders 2
Displacement 0.993 L / 60.60 Ci
Governor Type Electronic
Starter Motor Voltage 12V
Oil Capacity 2.3 / 2.46
Low Pressure Switch Included
Lubrication System Full Pressure
Oil Briggs and Stratton 5w30 Full Synthetic
Alternator Specs
Manufacture Briggs and Stratton
Type Self-Excited, 4 Lead
Voltage Regulator Automatic
Insulation Class F
Peak Motor Starting kVA 20kW - 41
Length 50.5 in
Width 33.8 in
Height 30.6 in
Weight 489 lbs

    As an Briggs & Stratton  authorized dealer, we offer a 5 year factory warranty on this item.

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