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Honda GX390 Engine — Electric Start, 3A Charging
$1,097.30
This is a Honda GX390 commercial-grade OHV engine with electric start and a 3-amp charging system, displacing 389cc. Supplied as an engine only — no pump, frame, or plumbing — for builders replacing a worn engine or assembling a custom pressure washing rig from the ground up.
Engine choice is the foundation of any build. Honda GX and iGX series engines are the industry reference for commercial pressure washing because of their starting reliability, parts availability, and service life under continuous load. A charging system matters if your rig runs 12V accessories — reels, pumps, hot boxes, or lighting — since it keeps batteries topped off through the workday instead of leaving you dead at the end of a shift.
Before ordering a replacement engine, confirm shaft diameter, shaft length, keyway, and mounting bolt pattern against your existing setup. Grime Task Force stocks the engines and the service parts that go with them, so a rebuild doesn't turn into a parts hunt.
Frequently Asked Questions
What's included? The engine only — no pump, frame, or plumbing.
What shaft does this have? Confirm shaft specification against your application before ordering.
Will this fit my existing machine? Check shaft diameter, shaft length, keyway, and bolt pattern against your current engine. Those four specs determine fitment.
Quantity
Out of stock
