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20KW Standby Generator 993cc Vanguard LP/NG by Briggs & Stratton #40358-R

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SRP: $4,199.00
BNE PRICE: $2,999.00
YOU SAVE: $1,200.00 (29 %)

Manufacturer: Briggs & Stratton
Part Number: 40358-R
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Available Options


Express Services


Choose Lift Gate

2 Year Factory Warranty
(Battery Not Included)
Transfer Switch 71046 recommended along with this generator (not included)
Running Watts (W) 20000 (LP) / 18000 (NG)
Surge Watts (W) 28000 (LP) / 25000 (NG)
Engine Brand Briggs & Stratton
Engine Series Commercial Power Train
Horsepower 35
CC 993
Cylinders V-Twin
Operation Fully Automatic
Voltage (V) 120/240
Alternator Type Brush
Full Pressure Lubrication Yes
Fuel Type Liquid Propane
Fuel Consumption (Cubic Feet per Hour @ 1/2 Load) 1.95 Gal/hour (LP)
Weekly Exerciser Yes
Sound Rating 65 dB (normal operation)
Sound Attenuation Sound Vault
Battery Charger Battery Charger Included, Battery Sold Separately
Overcrank Protection Yes
Hour Meter Yes
Diagnostic Alerts with Remote System Status Low Oil Shutdown, Fail to Start, Low Frequency, Engine Overspeed, Low Voltage, Low Battery Voltage, Oil Temp High, Transfer Switch Fault
Dimensions (L x W x H) 48 × 33 × 30.5
Weight (lbs) 600
This generator is not designed for prime power application

Factory Reconditioned Items  


  • What does Factory Reconditioned mean?

These are purchased, used, and returned units that have been serviced by the original manufacturer to meet new product performance specifications. Possible reasons units returned may be but arent limited to:

- Missing parts at the retail store level

- Purchased by consumer and did not work to the customers satisfaction

- Scratches and/or dents at store level. Paint may be peeling or flaking


  • BrandNewEngines receives all reconditioned items in sealed boxes direct from the factory. We do not recondition these units.  
  • Some factory reconditioned items look brand new, while some can look slightly used including but not limited to small scratches, small dents, fading or flaking paint. Regardless of appearance, you are getting a GREAT PRICE! These factory reconditioned sealed boxes are sold by us as is, but they do come with a 1 year factory warranty. These are not brand new items. All units have been run.
  • If there happens to be a problem with the unit or parts missing from the factory sealed box, you will have to contact the manufacturer and possibly take to a factory service center. While we do not service units, we will be happy to assist you with service center contact information.

    Battery Information (Battery Not Included)
    Now you no longer need the more expensive  glass mat battery for the new Briggs & Stratton 16kW or 20kW.

A lead acid will do. Choose the battery size based on whether you will install the cold weather kit, tested to -25 below.


 See details below:

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