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Briggs & Stratton 40351 - 8kW Home Standby Generator for sale.

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Briggs & Stratton 8kW Home Standby Generator

Briggs & Stratton Power Equipment and Accessories
Model: 40351
(Based on expert analysis, manufacturer ratings and customer reviews)
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
2 Reviews
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Airooled Standby Generators
8 kW
Rated Watts
120/240 Single-Phase
8kW (LP) /6kW (NG) Fully Automatic Standby Generator
Runs off LP or Natural Gas - no gas cans to fill and store

Newly Designed 500cc Briggs & Stratton Intek Engine
Specifically designed for this generator
Deliver improved reliability, performance and durability

Advance Power Management (Transfer Switch Sold Separately)
Combine w/ 50-Amp ATS to manage up to 10-circuits (Model # 1918)

Flexible Placement (Please Verify Local Building Codes)
Tested against tough National Fire Protection Agency standards
Can be placed as close as 18 from structure

Front Air Ventilation
Pushes engine exhaust out the front, away from the home

Galvanneal Steel Enclosure
Automotive rust proofing paint process for long, durable life

Includes Synthetic Oil & Battery Charger

4-Year Parts, Labor & Travel Warranty (100 Mile Max)
Engine Brand
Briggs and Stratton Intek
500 CC
Consumer Engine Warranty
4 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Product Specs
120/240 Single-Phase
60 Hertz
Surge Watts
8000 Watts
Rated Watts
8000 Watts
Fuel Type
LP/Natural Gas
NG Power Capacity
6000 Watts
LP Power Capacity
8000 Watts
NG Fuel Consumption @ 50% Load
94 (BTU: 94,000 BTU/HR) ft³/hr
NG Fuel Consumption @ 100% Load
121 (BTU: 121,000 BTU/HR) ft³/hr
LP Fuel Consumption @ 50% Load
1.04 (BTU: 94,380 BTU/HR) gallons/hr
LP Fuel Consumption @ 100% Load
1.57 (BTU: 142,478 BTU/HR) gallons/hr
Rated Amps
33 @ 240 Volts (Single Phase) Amps
Decibel Rating @ 7m
79 dbA
Transfer Switch
Automatic (Not Included)
Not Included (540 CCA)
Mounting Pad
Steel (Included)
Cooling System
Air Cooled
UL Listed
Grade Type
Made in USA
252 Pounds
Product Length
28 Inches
Product Width
24.4 Inches
Product Height
35.1 Inches
Consumer Warranty
4 Years
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  1 Question
Q: Is there a remote or auto start kit available for this generator -Briggs 40351? Non-grid tie.
by Kevin from Massachusetts on September 21, 2013

A: These units cannot be used in off grid applications as this would void the manufacturers warranty. They are specifically designed for emergency power backup/standby use only as the internal generator controller needs to be properly connected to an automatic transfer switch otherwise the unit will error and not operate properly.

The only systems we offer for off grid, prime or primary power applications would be portable or tow-behind diesel generators.

Portable Generators

Tow-Behind Diesel Generators

by Mike, Product Expert
Briggs & Stratton 40351 Reviews & Ratings
Overall Rating
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
I'd Buy It Again (1)
Reliable (1)
Price (1)
Easy To Use (1)
None to display.
100% of respondents would recommend this product to a friend
2 Reviews  Sort by 
Joseph K.
Elysburg, PA
Total Helpful Votes
62 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Used Once Worked Great
I have the 8000 watt Briggs home standby generator. I only lost power for 20 minutes and the unit turned on and off with little interruption. I have a 250 gallon propane tank. It is set to go on for 20 minutes once a week and have had it for 12 months, my propane tank is still full!! I'm not to sure how long, with continuous operation, the tank will last. I do, however, have piece of mind if anything would interrupt my utility power. So far I am so glad I have this unit.
Pros: Easy To Use, Price, Reliable, I'd Buy It Again
Joseph Recommends This Briggs & Stratton Product
Mike, the Generator Expert
Product Expert
While running the weekly exercise cycle the unit doesn't consume very much fuel since there is no load on the generator and while in operation the unit uses the following amounts of LP fuel...

LP Consumption (50% Load) 1.04 gallons/hr (BTU: 94,380 BTU/HR)
LP Consumption (100% Load) 1.57 gallons/hr (BTU: 142,478 BTU/HR)
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Frank D.
Robinson, IL
4 out of 54 out of 54 out of 54 out of 54 out of 5
Works As Advertised
The following day after installation we lost power for 4 hours. Generator worked flawlessly. 8KW unit/w 100amp circuit.
Would recommend this setup to all my friends.
Frank Recommends This Briggs & Stratton Product
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Free Freight
  • Ships via Semi-Truck
  • Requires a loading dock or forklift
  • Free to Lower 48 States
We currently CANNOT ship this product to Alaska, Hawaii or any destination outside of the United States
Lift Gate Services
  • Safely Lowers Products Off the Truck
  • Requires Special Hydraulic Lift
  • Free Lift Gate
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Buy Briggs & Stratton 8kW Home Standby Generator at Power Equipment Direct. Read standby generator reviews and standby generator articles. Wide Selection of standby generator accessories available, including Reliance Controls Power Out Alarm w/ LED Flashlight, Briggs & Stratton 50-Amp Automatic Transfer Switch w/ 10-Circuit Load Center and Briggs & Stratton Basic Wireless Monitor for Standby Generators (8-12kW).

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