DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine
DuroMax  439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine

439cc 3/8" Shaft Recoil Start Horizontal Dual Fuel Engine

Regular price
DuroMax XP18HPX
$549.00 MSRP
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The DuroMax XP18HPX is our largest and most powerful Dual Fuel engine. This 439cc 4-stroke OHV powerhouse is suitable for multiple heavy duty applications including go karts, pressure washers, trailer-mounted mobile carwashes, log splitters, rototillers/cultivators, and water/trash transfer pumps. The XP18HPX comes equipped with convenient features such as a large 1.4-gallon gas tank., a propane hookup for flexibility and longer runtimes, an electric keyed start, and an E-Z pull recoil starter. This engine is EPA and CARB approved for safe mandated use. 
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ALL-NEW

439cc Dual Fuel OHV Engine

Your favorite engine, now with equipped with Dual Fuel Technology. The same power you love, now with the ability to run on gasoline and propane.

Dual Fuel Technology

DuroMax is the industry leader in Dual Fuel technology, with a full assortment of products ranging from digital inverters to portable whole home generators. For the first time ever, we're bringing this technology to our engines.

XP18HPX Specifications

Specifications
Manufacturer DuroMax Power Equipment
Part # XP18HPX
Engine Type 4-Stroke
Valve Type OHV
Engine Cooling Type Forced Air
Displacement 439cc
Bore 92 mm
Stroke 66 mm
Max Output 4000 rpm
Max Torque 35.6 N·m @ 2500 rpm
Shaft Orientation Horizontal
Shaft Size 1” diameter, 2.84” long, 1/4” keyway
Shaft End 3/8” size 24 UNF - drilled and tapped
Shaft Rotation Counter-Clockwise
Measurement from Center of Shaft to Base 5.31”
Fuel Tank Capacity 1.4 gallons
Fuel Types Gasoline, Propane
Fuel Delivery System Carburetor
Average runtime on gasoline 2 hours
Average runtime on propane 8 hours (40 lb)
Starting type Key Switch
Electric Start Yes
Recoil Start Yes
Cast Iron Sleeve Yes
Bearing Type Stainless Steel Ball Bearing
Oil Cooling Type Splash
Oil Capacity 37.2 fluid oz.
Recommended Oil 10W-30
Recommended Oil Types Blended, Conventional, or Synthetic
Product Dimensions 19.29” L x 13.98” W x 18.11” H
Weight 79 lbs
UPC 811640016791
EPA Certified Yes
CARB Certified Yes
50 State Emissions Yes
Warranty 3 Year
What’s in the Box DuroMax XP18HPX Engine, 12V battery leads, Propane hose with propane regulator, Propane inlet cap, Owner’s manual
Electric Key Start

Enjoy power when you need it. No need to wait around – start your engine quickly and easily with the turn of a key.

The Heart of a DuroMax

At the core of all our products resides a robust DuroMax engine. Designed for Power. Designed to Last.

FOR WORK, FOR PLAY

Power Anything That Moves

Whether you're building a custom go kart or need to run work equipment, this versatile engine will keep you powered.

Industry-Leading
3 Year Warranty

We stand behind the quality and durability of our engines. Stay powered with our U.S. based Customer Service and Technical Support. 

Nationwide Service Centers

Part of our commitment to excellence means being able to support our customers beyond the initial purchase of their product.

Find a Service Center Near You

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XP18HPX Specifications

Specifications
Manufacturer DuroMax Power Equipment
Part # XP18HPX
Engine Type 4-Stroke
Valve Type OHV
Engine Cooling Type Forced Air
Displacement 439cc
Bore 92 mm
Stroke 66 mm
Max Output 4000 rpm
Max Torque 35.6 N·m @ 2500 rpm
Shaft Orientation Horizontal
Shaft Size 1” diameter, 2.84” long, 1/4” keyway
Shaft End 3/8” size 24 UNF - drilled and tapped
Shaft Rotation Counter-Clockwise
Measurement from Center of Shaft to Base 5.31”
Fuel Tank Capacity 1.4 gallons
Fuel Types Gasoline, Propane
Fuel Delivery System Carburetor
Average runtime on gasoline 2 hours
Average runtime on propane 8 hours (40 lb)
Starting type Key Switch
Electric Start Yes
Recoil Start Yes
Cast Iron Sleeve Yes
Bearing Type Stainless Steel Ball Bearing
Oil Cooling Type Splash
Oil Capacity 37.2 fluid oz.
Recommended Oil 10W-30
Recommended Oil Types Blended, Conventional, or Synthetic
Product Dimensions 19.29” L x 13.98” W x 18.11” H
Weight 79 lbs
UPC 811640016791
EPA Certified Yes
CARB Certified Yes
50 State Emissions Yes
Warranty 3 Year
What’s in the Box DuroMax XP18HPX Engine, 12V battery leads, Propane hose with propane regulator, Propane inlet cap, Owner’s manual

Warranty Information

DuroMax stands behind this product with a 3 Year parts and technical service warranty. Our USA based teams are available to help walk-through, troubleshoot or diagnose. Nationwide service centers fix any issues - DuroMax has you covered!

Product Registration

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