Power the fun stuff or cover an emergency with a GP Series portable generator. Affordable reliability and features not usually found on basic portable models make these a favorite for home use, camping, job sites or outdoor events.


See a larger image illustrating this generator’s main features.
Note for California residents: This model is not CARB-compliant. Units sold to California must be CARB-compliant.
Reliability From the Start
Because of Generac’s focus on power generation, we know how to design an engine that can stand up to the long hours of continuous use generators can be required to run. Cast iron cylinders add longevity, not found on every portable generator engine.
Easily Accessible Controls
A portable generator needs to be ready for use at all times. Generac added maintenance reminders on the hour meter, so scheduled maintenance is easy to track, and the convenient fuel gauge provides at-a-glance fuel monitoring. Many portable models have controls located in inconvenient locations and are difficult to access quickly, especially in the dark. We gave control placement careful consideration, with comprehensive control sets conveniently located for easy access.
Framed for Durability
The hardened steel frame gives our portable generator cradles added strength and are a premium 1¼” thick, a full ¼” thicker in diameter than competitors’ models. The addition of integrated brackets and impact resistant corners on most models gives contractors rugged options ideal for job site use.
What’s in the Box
Generac GP5500-5939 GP Series 5,500-Watt 389-cc OHV Portable gas-powered generator (Non-CARB Compliant), wheel kit, handle, first oil supply, and manual.
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Model # | GP1800 | GP3250 | GP5000 | GP5500 | GP6500 | GP6500E | GP7500 | GP7500E | GP15000E | GP17500E | |
49-State Model | 5981 | 5982 | 5938 | 5939 | 5940 | 5941 | 5942 | 5943 | 5734 | 5735 | |
CSA / Carb Models | 5981-1 / NA | 5982-1 / 5983 | 5974 / 5944 | 5975 / 5945 | 5976 / 5946 | NA / NA | 5977 / NA | 5978 / NA | NA / NA | NA / NA | |
Running watts | 1800 | 3250 | 5000 | 5500 | 6500 | 6500 | 7500 | 7500 | 15000 | 17500 | |
Starting watts | 2050 | 3750 | 6250 | 6875 | 8000 | 8000 | 9735 | 9735 | 22500 | 26250 | |
Engine displacement | 168cc | 208cc | 389cc | 389cc | 389cc | 389cc | 420cc | 420cc | 990cc | 990cc | |
Engine type | OHV | OHV | OHV | OHV | OHV | OHV | OHV | OHV | OHV | OHV | |
Starting method | Manual | Manual | Manual | Manual | Manual | Electric / Manual | Manual | Electric / Manual | Electric | Electric | |
Battery | — | — | — | — | — | Included | — | Included | Included | Included | |
Low oil shutdown | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
Fuel tank size (gallons) | 3.5 (steel) | 3.5 (steel) | 7.2 (steel) | 7.2 (steel) | 7.2 (steel) | 7.2 (steel) | 8.0 (steel) | 8.0 (steel) | 16.0 (resin) | 16.0 (resin) | |
Run time @ 50% load | 10.5 hours | 9.7 hours | 10 hours | 10 hours | 10 hours | 10 hours | 12 hours | 12 hours | 10 hours | 10 hours | |
Hour meter | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
Outlets | (2) 5-20R 120V | (2) 5-20R 120V (1) L14-20R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(4) 5-20R 120V (1) L14-30R Twist-Lock 120/240V |
(2) 5-20R 120V (2) 5-20R GFCI (2) L5-30R 120V Twist-Lock (1) L14-30R 120/240V Twist-Lock (1) 14X50R 120/240V (1) 12VDC,10 Amp |
(2) 5-20R 120V (2) 5-20R GFCI (2) L5-30R 120V Twist-Lock (1) L14-30R 120/240V Twist-Lock (1) 14X50R 120/240V (1) 12VDC,10 Amp |
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Covered outlets | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
Handle style | — | Folding | Folding & locking |
Folding & locking |
Folding & locking |
Folding & locking |
Folding & locking |
Folding & locking |
Fixed | Fixed | |
Wheel type | — | 8-inch solid | 9.5-inch solid | 9.5-inch solid | 9.5-inch solid | 9.5-inch solid | 9.5-inch solid | 9.5-inch solid | 12.3-inch pneumatic | 12.3-inch pneumatic | |
Dimensions (LxWxH, inches) | 23.5 x 18 x 18 | 23 x 22.5 x 21 | 28.75 x 26.75 x 25 | 28.75 x 26.75 x 25 | 28.75 x 26.75 x 25 | 28.75 x 26.75 x 25 | 28.75 x 26.75 x 26 | 28.75 x 26.75 x 26 | 48.5 x 31 x 39.5 | 48.5 x 31 x 39.5 | |
Weight (pounds) | 86 | 115 | 178 | 180 | 184 | 195 | 190 | 201 | 363 | 390 | |
Warranty, residential | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | 2-year, limited | |
Warranty, commercial | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year | 1-year |