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  • Honda EM4000SX
  • Sportsman GEN4000-SS
  • Model EM4000SX
    Model EM4000SX

    Honda 3,500W Gas Generator

    3500W
    Running
    71 dB
    Noise
    View details
  • Model GEN4000-SS
    Model GEN4000-SS

    Sportsman 3,500W Gas Generator

    3500W
    Running
    69 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationHonda EM4000SXSportsman GEN4000-SS
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
Winner: Winner: 3500 W
Winner: Winner: 3500 W
Starting watts
Winner: Winner: 4000 W
Winner: Winner: 4000 W
Noise (lower limit)
71 dB
Winner: Winner: 69 dB
Weight
201 lbs
Winner: Winner: 91 lbs
Run time @50% load
Winner: Winner: 16 h
10 h
Run time @25% load
Not available
Not available
Fuel tank
6.2 gal
3.9 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
41.1 x 27.8 x 28.3
23 x 19.5 x 17.5
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
12
12
GFCI outletsYesNo
Covered outletsNoNo
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
Honda iGX270 OHV 4-stroke, cast iron sleeve
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
3500 W
3500 W
Starting watts
4000 W
4000 W
Running amps (120V)
Not available
Not available
Running amps (240V)
Not available
Not available
Peak amps (120V)
Not available
Not available
Peak amps (240V)
Not available
Not available
Run time @50% load
16 h
10 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
CARB, EPA
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Not available
UPC
786102005265
27077082470
Core / High-priority specs
Running Watts (Gasoline)
3500
3500
Starting Watts (Gasoline)
4000
4000
Runtime @ 50% Load (Gasoline)
16
10
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 20A (L14-20R)
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
OHV 4-stroke
Engine Displacement
270
212
Cylinder Sleeve
cast iron sleeve
Not available
Engine Oil Type
Not available
SAE10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
16
10
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Included equipment
Starting Components
Not available
Recoil
Included Accessories
Battery and wheel kit
Funnel, tool kit, and battery charging cables
Warranty & identification
Commercial Warranty
3
Not available
Part Number
EM4000SXAT1
Not available
Additional specs
Summary
The Honda EM4000SX is a 4000-watt portable generator featuring a Honda iGX270 engine, electric start, and a 6.2-gallon fuel tank, providing extended run times and reliable power for various applications.
The Sportsman GEN4000-SS is a gasoline-powered generator offering 4000 surge watts and 3500 running watts, suitable for running RVs, household appliances, and power tools.
  • Most Powerful
    Honda EM4000SX
    3500W running
  • Quietest
    Sportsman GEN4000-SS
    69 dB
  • Longest Runtime
    Honda EM4000SX
    16h at 50% load
Where to buy
Prices can change. We update these automatically.
Honda EM4000SX
Store links
No links yet.
Sportsman GEN4000-SS
Store links
No links yet.
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