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Champion Power Equipment

Model #100221

389cc Horizontal Engine

When you need reliable power for small engine applications, Champion’s got you covered with the 389cc Replacement Engine. With a 1.6-gallon fuel tank and 1.2-quart oil capacity, this engine features an easy key-turn electric start, a low oil shut-off sensor, and has a clean-operating OHV design.


Electric Start

Simple key-turn ignition switch for dependable starts, or the automatic compression release allows for low effort, smooth recoil starts


4-stroke durable OHV design for clean and cool operation, produces a max torque of 16.6 lb-ft at 2800 RPM


The 389cc engine has a cast iron sleeve and a ball bearing supported crankshaft


EPA certified and 50-state CARB compliant with automatic low oil shut-off sensor


Champion Support includes 2-year limited warranty with FREE lifetime technical support from dedicated experts


The Champion Power Equipment 100221 389cc General Purpose Horizontal Replacement Engine is designed to provide reliable power for most small engine applications. Whether you need to replace the engine in your pressure washer, compressor, cement mixer, snow blower, log splitter, transfer pump, chipper shredder or other application, you can count on a Champion replacement engine to power your life.

This powerful engine comes with a 1.6-gallon fuel tank and a 1.2-quart oil capacity (recommended 10W-30).

Producing a max torque of 16.6 lb-ft (22.5 Nm) at 2800 RPM, the 4-stroke, single cylinder OHV engine has a straight crankshaft with a 1-inch diameter, a 7/16-inch- 20 UNF threaded end hole, a 1/4-inch keyway, a 5-inch circle (5/16-inch - 24 UNF) shaft mount bolt pattern, a 5.26-inch PTO height, and counterclockwise rotation.

Champion’s reliable and durable engine also features an adjustable throttle, plus this engine is designed for safety with the fuel shut-off valve and automatic low oil shut-off sensor.

Buy this EPA certified and CARB compliant engine with confidence – Champion Support and our nationwide network of service centers will back up your purchase with a 2-year limited warranty and FREE lifetime technical support.

What’s included

  • Oil Funnel


Power Type Gasoline
Start Type Recoil, Electric
Engine Brand Champion
Engine Size 389cc
Engine Type 4-stroke
Gasoline Capacity 1.6 gal.
Engine Oil Type 10W-30
Engine Oil Capacity 1.2 qt.
Engine Oil Included No
Low Oil Shut-Off Yes
Crankshaft Orientation Horizontal
Crankshaft Type Straight
Crankshaft Rotation Counterclockwise
Crankshaft Diameter 1 in.
Crankshaft End Tapped Size 7/16-20 in-UNF
Shaft Keyway Width 1/4 in.
PTO Height 5-1/4 in.
Maximum Torque 16.6 lb-ft
EPA Certified Yes
CARB Compliant Yes


Length 16.0 in.
Width 19.4 in.
Height 17.6 in.
Weight 75.8 lb.