The Honda iGX800’s EFI V‑Twin engine produces 24.9 horsepower at 3600 rpm.
Honda iGX800 OHV V-Twin Engine — 779cc, Electric Start, Horizontal, 1-1/8in. x 3.8in., Model# GX800IRHXTAFX

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- Ideal for generators, industrial and commercial equipment, small vehicles, and more
- OverHead Valve (OVH) design improves combustion efficiency and increases engine life
- 9.1:1 compression ratio for high power output without needing premium fuel
- Integrated cylinder and head provides more airflow and better cooling for the V-twin
- Electronic Fuel Injection (EFI) ensures fuel efficiency for consistent performance
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Description
Key Specs
Reviews
Q & A
Warranty
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Product Summary
What's Included
- (1) Engine
Features + Benefits

- Ideal for generators, industrial and commercial equipment, small vehicles, and more
- OverHead Valve (OVH) design improves combustion efficiency and increases engine life
- 9.1:1 compression ratio for high power output without needing premium fuel
- Integrated cylinder and head provides more airflow and better cooling for the V-twin
- Electronic Fuel Injection (EFI) ensures fuel efficiency for consistent performance
- Self Tuning Regulator (STR) electronically maintains constant engine speed
- Easy maintenance with LED diagnostic indicator with link to tablet or PC for full diagnosis
- Auto choke reduces startup issues caused by fuel
- Automotive-type oil filter for easy changes
- Oil alert prevents damage to engine due to low oil level
- 3 year limited warranty
- Not for sale in California
Key Specs
| Attribute | Specification |
|---|---|
item# | 7113622 |
Brand | Honda Engines |
Manufacturer's Warranty | 3 year limited warranty |
Ship Weight | 110.0 LB |
Engine Displacement | 779 cc |
Engine Type | Horizontal |
Fuel Type | Gasoline |
Start Type | Electric |
Net Torque | 40.2 ft-lbs. |
Cylinders (qty.) | 2 |
Net Power Output | 22.1 HP |
Compression Ratio | 9.1:1 |
Fuel Tank | No |
Oil Capacity | 1.9 qt |
| Attribute | Specification |
|---|---|
Low Oil Shutdown | Yes |
Low Oil Alert | Yes |
Max. RPM | 3,600 |
CARB Approved | No |
Governor System | Electric Self Turning |
Ignition System | Transistorized Magneto |
Cooling System | Air |
Bore | 3.27 in |
Stroke | 2.83 in |
Air Cleaner Type | Dual Element |
Throttle Control | Automatic |
Fuel Filter | Yes |
Product Weight | 104.0000 lb |
Dimensions L x W x H (in.) | 16.9 x 19.4 x 17.2 in |
Reviews
Questions & Answers
Questions
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· 10 days ago
Horse power for Honda 800 fuel ejection
1 answer-
ProductExpert29· 6 days ago
Helpful?
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· a month ago
what muffler goes with this
1 answer-
ProductExpert5· a month ago
The correct muffler for the Honda iGX800 depends on the equipment it's installed on. Honda offers multiple muffler configurations (such as left- or right-exit) to fit different applications and mounting layouts.
Helpful?
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· 2 months ago
Can I start this engine on floor? Wonder if Everything included.
1 answer-
ProductExpert11· 2 months ago
This is the engine only. It is unable to be run while sitting on the floor. It will require a gas tank, battery and exhaust. This is controlled by the vehicle in which the engine is being installed.
Helpful?
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Warranty
Manufacturer's Warranty
3 year limited warranty
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Item # 7113622
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Specifications
779 cc
196 cc
688 cc
270 cc
Horizontal
GX Series OHV Commercial-duty
GX Series OHV V-twin
GX Series OHV Commercial-duty
Gasoline
-
-
-
Electric
Recoil
Electric
Electric and Recoil
40.2 ft-lbs.
9.1 ft-lbs.
35.6 ft-lbs.
14.1 ft-lbs.
2
1
2
1
22.1 HP
5.5 HP
22.1 HP
8.5 HP
9.1:1
8.5:1
9.3:1
8.5:1
No
Yes
No
-
1.9 qt
0.63 qt
2 qt
1.16 qt
Yes
Yes
Yes
-
Yes
-
Yes
-
3,600
-
-
-
No
-
-
-
Electric Self Turning
Centrifugal Mechanical
Mechanical
Centrifugal Mechanical
Transistorized Magneto
Electronic
Electrical, Digital CDI W/variable Ignition Timing
Electronic
Air
Air
Air
Air
3.27 in
2.7 in
3.1 in
3 in
2.83 in
2.1 in
2.8 in
2.3 in
Dual Element
Dual Element
Dual Element
Dual Element
Automatic
Manual
Manual
Remote
Yes
-
Yes
Yes
104.0000 lb
-
-
-
16.9 x 19.4 x 17.2 in
-
-
-
-
5/8 in
1-1/8 in
1 in
-
2.42 in
3.96 in
3.23 in
-
T-type
T-type
H-type
-
4.17 in
5.25 in
5.25 in
-
Cast Iron
Integrated
Cast Iron
-
3.3 qt
-
5.6 qt
-
Counter Clockwise
Counter Clockwise
Counter Clockwise
-
Float
(2) Barrel, Fuel Cut Solenoid, Inner Vent
Float, External Vent
-
Splash
Forced Lubrication
Splash
-
Manual
Manual
Manual
-
Yes
No
-
-
-
0.25 in
0.25 in
-
-
Ball
-
-
-
Yes
-
-
-
17
-
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