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Home Horizontal Engines Honda GX390 QAE2 Horizontal Engine
Honda GX270 QA2 Horizontal Engine
Honda GX270 QA2 Horizontal Engine $344.00
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Honda GX120 QX2 Horizontal Engine
Honda GX120 QX2 Horizontal Engine $203.00

Honda GX390 QAE2 Horizontal Engine

$479.00

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SKU: 83686041 Category: Horizontal Engines
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Description
Honda GX390 QAE2 (GX390UT2QAE2) horizontal OHV engine is 390cc and puts out 11.7 net HP. This Honda GX has a 1″ x 3-31/64″ crankshaft. The engines has an electric starter, a 3-amp charging system with rectifier, a silent muffler with spark arrestor and deflector, plus an oil alert system. Honda GX390 commercial engines deliver economical and quiet operation without sacrificing superior performance and reliable power. Common applications for this engine include water pumps, small vehicles, commercial lawn and garden equipment, generators and more. Buyer protection package provides three-year commercial engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.

Key Specifications

BRAND Honda
MODEL NUMBER GX390-QAE2
REPLACES MODELS GX390U1QAE2, GX390UTQAE2, GX390K1QAE2, GX390UT2QAE2, GX390UT1QAE2, GX390 QAE2
WARRANTY 3 Year Consumer & Commercial
SHIPPING WEIGHT 86
DISPLACEMENT 389cc
STARTER TYPE Electric & Recoil
CRANKSHAFT ORIENTATION Horizontal
CRANKSHAFT TYPE Straight
FUEL SYSTEM Gasoline
GEAR REDUCTION No
CRANKSHAFT DIMENSIONS 1″ x 3-31/64″
CRANKSHAFT LENGTH 3-31/64″
CRANKSHAFT END TAPPED SIZE 7/16 – 20
CRANKSHAFT KEYWAY WIDTH 1/4″
CRANKSHAFT ROTATION DIRECTION (FROM PTO SIDE) Counterclockwise
BEARING TYPE Ball
CYLINDERS 1
CYLINDER BORE TYPE Cast Iron
AIR CLEANER TYPE Dual Element
FUEL PUMP No
OIL COOLER No
OIL CAPACITY 38
LOW OIL ALERT No
LOW OIL SHUTDOWN Yes
IGNITION SYSTEM Digital CDI with Variable Timing
CARBURETOR TYPE Float
CHOKE CONTROL Manual
BOLT CIRCLE 5,6-1/2
NOTES Engine Notes:
PTO HEIGHT 5 – 1/4

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

    • 1204 E Yorba Linda Blvd, Placentia, CA 92870, USA
    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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