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Smart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator With Honda Engine New
Smart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator With Honda Engine New - view 2
Smart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator With Honda Engine New - view 3
Smart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator With Honda Engine New - view 4

Smart GeneratorsModel SG12003

Smart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator

  • Peak21 kW
  • Running12 kW
  • FuelGasoline
  • StartElectric
$4,649.00

In stock Ships within 24 hours

Free delivery Wed, Nov 18 – Mon, Nov 23 if you order today, by UPS or FedEx Ground to your door.

  • Free shipping48 states + DC
  • 30-day returnsReturn shipping on us
  • Full warrantyBrand-new, from the maker
  • Secure checkoutEncrypted by Stripe
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Questions before you buy? Our small team in Wilmington, NC answers every message personally. Email support@barnwatt.com Call (910) 232-3233

The Motorhead® gasoline portable generator is the perfect generator for either Commercial or Residential use.

Running watts
12,000 W
Starting watts
21,000 W
Fuel
Gasoline
Start
Electric
SKU: SG12003
Category: , ,

The Motorhead® gasoline portable generator is the perfect generator for either Commercial or Residential use. It has a premium quality frame with 4 beefy wheels for easy mobility. On the job site this unit can power all of your power tools without skipping a beat. It is also a great choice for a homeowner looking to power up a central air conditioner up to 5 tons, sump pump, well pump, heat, microwave, lights, entertainment center, computers, refrigerators, etc.

Full specifications

BrandSmart Generators
ModelSG12003
Running watts12,000 W
Starting watts21,000 W
FuelGasoline
StartElectric
UPC / GTIN00854871005042
How it shipsUPS or FedEx GroundTo your door, free
Order today, deliveredWed, Nov 18 – Mon, Nov 23Leaves our warehouse within 24 hours

Tracking is emailed as soon as it ships.

We ship to the 48 contiguous states and Washington, DC. Shipping details · 30-day free returns

Brand-new, with the full manufacturer’s warranty. The terms are set by Smart Generators and included in the box. If something goes wrong, contact us first: we confirm the next steps within 2 business days and help you file the claim.

How warranty claims work

What it can run

12,000 W running, 21,000 W starting

Pick what you want to power at the same time.

Typical wattages - check the label on your own appliances. Where only one figure is published, running watts are estimated at 80% of the starting figure. Connect to house circuits only through a transfer switch or interlock fitted by a licensed electrician.

Compare similar generators

Same power class, side by side.

SpecificationSmart Generators SG12003 The Motorhead Gas 12000W/21000W Electric Start Portable Gas Generator With Honda EngineThis generator$4,649.00Generac GP15000E 15000W/22500W Gas Generator Electric Start$2,459.00GENMAX GM17000iET 13500W/17000W Generator Tri-Fuel Gas Propane Natural Gas 50A Inverter CO Detect Remote Start$3,119.00
Running watts12,000 W15,000 W13,500 W
Starting watts21,000 W22,500 W17,000 W
FuelGasolineGasolineGasoline, propane or natural gas
StartElectricElectricRemote and electric
Largest outlet——50 A
Safety——CO shutdown sensor
LinkYou are hereView →View →

Questions and answers

Answered by our team in Wilmington. Can’t find yours? Ask below.

Can I connect this generator to my house?
Only through a transfer switch or an interlock kit installed by a licensed electrician. Never plug a generator into a wall outlet: it can back-feed the utility line and endanger line workers. Connecting safely.
What can it run at the same time?
Use the What it can run planner above: tick your appliances and it checks both the running load and the start-up surge against this generator.
Does it ship with oil?
It depends on the manufacturer. If oil is included it is listed under What’s in the box; otherwise use the grade given in the owner’s manual before the first start.
Can I use it in the rain?
Not uncovered. Run it on a dry surface under an open, canopy-like cover, at least 20 feet from doors, windows and vents, and never in a garage.
How will it be delivered?
Free, by UPS or FedEx Ground to your door, usually within 2–5 business days after it ships. Tracking is emailed as soon as it ships.
What if it arrives damaged?
Photograph it and email us within 48 hours of delivery. We replace or refund damaged items at no cost to you.
Ask a questionWe reply personally by email.

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