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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Firman P03503
  • Ford FG4050P
  • Model P03503
    Model P03503

    Firman 3,550W Gas Generator

    3550W
    Running
    67 dB
    Noise
    View details
  • Model FG4050P
    Model FG4050P

    Ford 3,000W Gas Generator

    3000W
    Running
    76 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
SpecificationFirman P03503Ford FG4050P
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
Winner: Winner: 3550 W
3000 W
Starting watts
Winner: Winner: 4450 W
4050 W
Noise (lower limit)
Winner: Winner: 67 dB
76 dB
Weight
Winner: Winner: 108.5 lbs
108.7 lbs
Run time @50% load
Winner: Winner: 14 h
11 h
Run time @25% load
Not available
Not available
Fuel tank
5 gal
4 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.8 x 21.7 x 21.7
28 x 26 x 22
Electrical
Voltage (AC)
120
120
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
208 cc OHV 4-stroke, cast iron sleeve.
Ducar OHV 4-stroke, 208 cc
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
Not available
3000 W
Starting watts
4450 W
4050 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
14 h
11 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
true
UPC
840876135037
819699011606
Core / High-priority specs
Running Watts (Gasoline)
Not available
3000
Starting Watts (Gasoline)
4450
4050
Runtime @ 50% Load (Gasoline)
14
11
AC Outlet Types
1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R)1x 120V 30A (TT-30R)
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
Ducar OHV 4-stroke
Engine Displacement
208
208
Cylinder Sleeve
cast iron
Not available
Engine Oil Type
Not available
10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
14
11
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Included Accessories
Oil, funnel, tool kit, cover, and wheel kit
Oil, funnel, tool kit, and wheel kit
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The Firman P03503 is a 3,550-watt gasoline generator built around a 208cc OHV 4-stroke engine with a cast iron sleeve. This wattage handles mid-range household loads: a refrigerator, microwave, and several outlets running simultaneously, or a modest RV power setup. The 5-gallon fuel tank delivers 14 hours of runtime at 50% load, meaning a full tank covers a typical overnight camping trip or a daytime power outage without refueling. The 4,450 starting watts give it enough surge capacity to turn on air conditioning compressors or well pumps, making it practical for both emergency backup and recreational use.
The Ford FG4050P is a 3000-watt gasoline generator built on a 208cc Ducar OHV 4-stroke engine. This wattage handles essential household appliances, power tools, and small job site equipment simultaneously. The 4050-watt peak output absorbs the startup surge of refrigerators, air compressors, and well pumps without stalling. At 108.7 pounds with an included wheel kit, the unit sits at the threshold where portability requires planning. A single person can move it short distances, but sustained transport benefits from a second set of hands or a vehicle.
  • Most Powerful
    Firman P03503
    3550W running
  • Quietest
    Firman P03503
    67 dB
  • Longest Runtime
    Firman P03503
    14h at 50% load
Where to buy
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Firman P03503
Store links
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Ford FG4050P
Store links
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