Honda Gx390 H2 Qx Engine

The Honda GX390 H2 QX stands as the flagship of Honda’s industrial GX engine line, delivering outstanding performance, durability, and efficiency. With a robust 389cc OHV 4-stroke engine, precision components, and advanced engineering, it is widely used across construction, agriculture, forestry, commercial lawn care, and industrial machinery.

Equipped with Honda’s digital CDI ignition, optimized combustion chamber, and high compression ratio, the GX390 offers unmatched fuel efficiency and consistent power output. The heavy-duty recoil starter and automatic decompression system ensure effortless starting in all conditions.

Built with a forged steel crankshaft, rigid crankcase, cast iron cylinder sleeve, and ball-bearing supported crankshaft, the GX390 is engineered for long service life—even under continuous heavy load.

From generators to tillers, pumps to pressure washers, the GX390 is trusted by professionals who demand reliable power in the toughest environments.