The correct model number for this engine is GX390RT2QNGN.
Free Gift Card Details
$100 Order
$250 Order
$500 Order
$1000 Order
- The promotion will be automatically applied on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 11/01/26.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
Honda Engines, HONDA 389CC 18AMP ES NO TANK, Engine Displacement 389 cc, Engine Type GX Series OHV Commercial-duty, Shaft Diameter 1 in, Model# GX390RT2QNGN

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Factory shippedStore Pickup:
Not available - online only
- Model# GX390RT2QNGN; Honda 389cc GX air-cooled, 4-stroke engine with 1in. dia. x 3 31/64in.L horizontal shaft
- OHV overhead valve design delivers increased efficiency and optimal power transfer
- Digital CDI ignition system with variable timing
- Bolt circle: 5in., 6 1/2in.; Mounting base: 7 11/16in.L x 3 25/64in. to 4 1/16in.W
- Cast iron cylinder sleeve
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) GX390 Engine
Features + Benefits
- Model# GX390RT2QNGN; Honda 389cc GX air-cooled, 4-stroke engine with 1in. dia. x 3 31/64in.L horizontal shaft
- OHV overhead valve design delivers increased efficiency and optimal power transfer
- Digital CDI ignition system with variable timing
- Bolt circle: 5in., 6 1/2in.; Mounting base: 7 11/16in.L x 3 25/64in. to 4 1/16in.W
- Cast iron cylinder sleeve
- Preferred engine for construction equipment, pressure washers, compressors, go-karts, log splitters, chipper/shredders and other applications
- Fuel efficient, high-output operation with precision camshaft design and a high compression ratio
- Smooth performance and reduced vibration from precision-balanced crankshaft and reduced piston weight
- Ball bearing-supported crankshaft offers greater stability
- Aluminum push rods reduce both valve clearance and noise level
- Muffler, breather valve, case cover, air intake system, rigid crankcase, helical-cut gears and lightweight materials are also designed to reduce noise level
- Oil alert protects engine
- Carburetor coating and filter help protect fuel from impurities
- Reliability comes from high-quality materials, fit and finish
- Dual-element air cleaner keeps engine running clean
- Easy to use and maintain with simple throttle control, large fuel tanks, wide-mouth automotive-style fuel cap, dual oil fills and drains, easy to use control box and easily accessible spark plug
- Quick starts from the heavy-duty recoil starter with ergonomic design and automatic decompression system
- Double walled heavy-duty tank with in tank fuel strainer
- Battery cables not included
- Not for sale in CA
Key Specs
| Attribute | Specification |
|---|---|
item# | 75926 |
Brand | Honda Engines |
Manufacturer's Warranty | 3 year limited warranty |
Ship Weight | 90.0 LB |
Engine Displacement | 389 cc |
Engine Type | GX Series OHV Commercial-duty |
Shaft Diameter | 1 in |
Shaft Length | 3.48 in |
Start Type | Electric and Recoil |
Shaft Keyway | 0.25 in |
Net Torque | 19.5 ft-lbs. |
Crankshaft | Q-type |
PTO Height | 5.25 in |
Cylinders (qty.) | 1 |
Cylinder Bore | Cast Iron |
Net Power Output | 11.7 HP |
Compression Ratio | 8.0:1 |
Fuel Tank | No |
| Attribute | Specification |
|---|---|
Oil Capacity | 1.16 qt |
Low Oil Shutdown | Yes |
Low Oil Alert | Yes |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
Governor System | Centrifugal Mechanical |
Ignition System | Electronic |
Carburetor | Float, External Vent |
Lubrication System | Splash |
Bearing Type | Ball |
Auto Compression Release | Yes |
Cooling System | Air |
Bore | 3.5 in |
Stroke | 2.5 in |
Air Cleaner Type | Dual Element |
Choke Control | Manual |
Throttle Control | Remote |
Charging System Amps | 18 |
Muffler Included | Yes |
Reviews
Questions & Answers
Questions
-
· 4 years ago
what model is this engine the main listing GX390RT2QNGN) is different than the description (GX390UT2QNE2)
1 answer-
ProductExpert6· 4 years ago
Helpful?
-
-
· 5 years ago
Does it have a fuel pump or is gravity feed?
1 answer-
ProductExpert38· 5 years ago
This engine is gravity fed.
Helpful?
-
-
· 5 years ago
is this a unverisal mount
1 answer-
ProductExpert6· 5 years ago
It would have a standard crank with 1" x 3 31/64" shaft and a 3/8-24 tapped end. The faceplate is the same as the other GX390 engines. It does not include a gas tank and is intended for use with a remote gas tank.
Helpful?
-
Accessories We Recommend
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Warranty
Manufacturer's Warranty
3 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
Compare with Most Popular in Horizontal Engines
See All Horizontal Engines
See All Honda Engines Horizontal Engines
Currently Viewing This Product
$1219.99Shipping:
Factory shippedStore Pickup:
Not available - online only
Item # 108174
$6799.99Shipping:
Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- $3014.99
Shipping:
Factory shippedStore Pickup:
Not available - online only
Item # 107938
$5031.34Shipping:
Factory shippedStore Pickup:
Not available - online only
Specifications
389 cc
1,028 cc
725 cc
441 cc
GX Series OHV Commercial-duty
Diesel Horizontal
Command Pro V-twin OHV
Diesel Horizontal
1 in
Group 8 Housing
1-1/8 in
-
3.48 in
Grp 8 in
2.75 in
-
Electric and Recoil
Electric
Electric
Electric
0.25 in
Grp 8 in
0.25 in
-
19.5 ft-lbs.
62.5 ft-lbs.
39.2 ft-lbs.
-
Q-type
-
Hardened
-
5.25 in
Grp 8 in
6.125 in
-
1
3
2
1
Cast Iron
Aluminum
Cast Iron
Cast Iron
11.7 HP
23.7 HP
25 HP
9.1 HP
8.0:1
22.8:1
9:1
20.3:1
No
-
No
-
1.16 qt
2.5 qt
2 qt
1.6 qt
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
Counter Clockwise
Counter Clockwise
Counter Clockwise
Counter Clockwise
Centrifugal Mechanical
Internal Flywheel Governor
Variable Speed
Yes
Electronic
Electronic
Electronic
Electronic
Float, External Vent
No
Smart Choke
Direct Injection
Splash
Full Pressure W/full Flow Filter
Full Pressure
Full Pressure With Full Flow Filter
Ball
Parent Material
Parent Material
-
Yes
No
-
Yes
Air
Liquid
Air
Air
3.5 in
3 in
3.3 in
3.4 in
2.5 in
3.1 in
2.6 in
3 in
Dual Element
Single Element
Dual Element
Single Element
Manual
Remote
Remote
-
Remote
Remote
Remote
-
18
45
20
20
Yes
Yes
-
Yes
-
Grp 8
-
-
-
Grp 8
-
-
-
Diesel
-
-
-
3,600
-
-
-
Yes
Yes
-
-
-
Toro Exmark ZTR
-
-
-
87 Up
-
See All Horizontal Engines
See All Honda Engines Horizontal Engines
Recently Viewed Items
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.






