The Wacker Neuson is a genuine OEM Engine Honda GX160UH2 SWX2 designed for the WPU1550AW and WPU1550A series reversible vibratory plate compactors. As a direct OEM replacement sourced through Wacker Neuson's authorized parts channel, this engine assembly ensures full compatibility with the compactor's drive and control systems without the guesswork of sourcing a generic substitute. Confirmed fitment spans the WPU1550AW-US, WPU1550AW, WPU1550A-US, and WPU1550A models, making part number the correct choice across the WPU1550 family.
Key Features
- Honda GX160UH2 Specification: — Purpose-matched displacement and output rating keep the WPU1550 series operating at its designed compaction force and travel speed.
- Genuine OEM Assembly: — Supplied as a complete engine unit through Wacker Neuson's authorized parts supply, ensuring all mounting interfaces, shaft dimensions, and control connections match the original configuration.
- Direct Drop-In for WPU1550 Models: — Fits WPU1550AW-US, WPU1550AW, WPU1550A-US, and WPU1550A; the engine cradle, throttle linkage, and drive engagement points align to the existing compactor frame without rework.
- Restored Compaction Output: — A worn or seized engine causes loss of centrifugal force and compaction depth; replacing with the correct 0400021 unit restores rated plate force and productive compaction capacity.
- Fuel System Safety Compliance: — The GX160UH2 SWX2 configuration meets the emissions and fuel system requirements applicable to the WPU1550 platform, keeping the machine compliant for use on regulated job sites.
The engine is the power source that drives the exciter mechanism inside the WPU1550 series reversible plate compactor, generating the high-frequency vibration that forces soil and aggregate particles into a dense, stable layer. The Honda GX160UH2 SWX2 designation identifies the specific output shaft arrangement, governor setting, and emissions configuration required for this platform. When the engine loses compression, develops excessive oil consumption, or fails to start reliably, compaction output drops and the machine becomes unproductive; installing the correct replacement engine assembly restores full operating capability and extends the useful service life of the compactor.
Part Details
| Part Number | 0400021 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Engine Honda GX160UH2 SWX2 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WPU1550AW-US | WPU1550AW-US | 5100069715 |
| WPU1550Aw | WPU1550AW | 5100071591 |
| WPU1550A-US | WPU1550A-US | 5100069716 |
| WPU1550A | WPU1550A | 5100071592 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
